Abstract: A de-interlacing system with an adaptive edge threshold has a motion factor generator to produce a motion factor of a position in accordance with a previous and a next fields. An adaptive edge threshold generator produces the adaptive edge threshold in accordance with a current, the previous and the next fields. A determinator determines which pixels are used to perform an interpolation on the position. When the motion factor is greater than the adaptive edge threshold, a pixel of the current field is used to perform an interpolation on the position. When the motion factor is smaller than the adaptive edge threshold, a pixel of the previous field and a pixel of the next field are used to perform an interpolation on the position.

Abstract: A method and an apparatus for processing an interlaced video signal is disclosed. First, the interfaced video signal is de-interlaced. A plurality of temporal interpolated frames between original frames of the interlaced video signal are created using motion compensated temporal interpolation. The plurality of temporal interpolated frames and original frames are temporal filtered to produce an output video signal.

Abstract: A system for integrating de-interlace and overdrive operations includes a de-interlace device, a first frame scaling controller, a second frame scaling controller and an overdrive device. The de-interlace device performs a de-interlace operation on plural fields to thereby obtain plural frames. The first frame scaling controller receives a first frame among the plural frames and performs a vertical and horizontal scaling operation on the first frame to thereby produce a first display frame. The second frame scaling controller receives a second frame among the plural frames and performs a vertical and horizontal scaling operation on the second frame to thereby produce a second display frame. The overdrive device produces a driving voltage based on a difference between a pixel of the second display frame and a pixel of the first display frame corresponding to the pixel of the second display frame.

Abstract: A de-interlace method and method for generating a de-interlace algorithm include steps of generating an adaptive tuning de-interlace algorithm. The steps of the method for generating a de-interlace algorithm include generating a characteristic difference value according to a first line-segment data and a second line-segment data, determining a blending vector based on the characteristic difference value, and generating the adaptive tuning de-interlace algorithm according to the blending vector Wherein, the blending vector is to determine a weight of a first de-interlace algorithm in the adaptive tuning de-interlace algorithm, and a difference between the blending vector and a constant is to determine a weight of a second de-interlace algorithm in the adaptive tuning de-interlace algorithm. Moreover, the de-interlace method performs the adaptive tuning de-interlace algorithm to generate a de-interlaced image.

Abstract: The invention includes a method for converting from an interlace scan image to a progressive scan image. Interpolated rows of pixels, lying between successive rows of the interlace scan image, are generated based upon the received interlace scan rows. The method determines a degree of movement, if any, in the region of a target pixel, and whether a target pixel lies on an edge between visually distinct regions. Multiple potential interpolated values for the target pixel are generated by several interpolation methods, including edge interpolation, inter-field interpolation, non-linear interpolation, and intra-field interpolation. The system uses the degree of movement and edge detection to select or combine one or more of the potential values for the target pixel. At least one correction filter is applied to the result, to correct errors caused by electrical noise in the interlace scan image.

Abstract: A sequential scanning conversion device includes: N (N is 3 or larger integer) line memories which store each input image data of successive N main scanning lines contained in input image data for interlaced scanning; an input/output control unit which sequentially selects one of the N line memories and writes the input image data to the selected line memory, and also reads (N?1) input image data written to the other (N?1) line memories in such timing at least a part of which overlaps with the writing timing; and an image processing unit which produces output image data for sequential scanning corresponding to M (M is one or larger integer) main scanning lines by applying predetermined process established in advance to the (N?1) input image data.

Abstract: An image de-interlacing method comprises: (a) defining a first threshold value and a second threshold value, wherein the second threshold value is larger than the first threshold value; (b) generating a parameter according to motion level of a interlaced image; and (c) utilizing a first interpolation method and a second interpolation method to jointly process the interlaced image if the parameter is in a range between the first threshold value and the second threshold value.

Abstract: A multi-function display controller that includes a source detector unit for determining if the source of an input stream is either film originated source originated or video source originated. A source converter unit for converting the input image stream to a common signal processing format is coupled to the source detector unit. Once converted to the common signal processing format, a determination is made if the input image stream is interlaced or non-interlaced (progressive scan). If the input image stream is interlaced, a de-interlace unit converts the interlaced signal to progressive scan using either motion adaptive or motion compensated de-interlacing techniques. It should be noted that in the described embodiment, motion vectors generated for use by the motion compensated de-interlace can be optionally stored in a memory unit for use in subsequent operations, such as motion compensated frame rate conversion or noise reduction (if any).

Abstract: A method for encoding video, comprising the steps of (A) detecting repeated fields in a video sequence and (B) generating a first repeated frame from a top field and any adjacent bottom field based upon detection of the repeated fields, wherein the top field and the bottom field are from one film frame.

Abstract: A method of detecting a change in a sequence of video data fields generated from a progressive scan source includes receiving first and second interlaced fields of a corresponding progressive scan frame from a sequence of interlaced fields generated from progressive scan source. Pixel values corresponding to pixel positions of pixel lines of a first parity of the first field are weaved with pixel values corresponding to pixel positions of pixel lines of a second parity of the second field. For each pixel value corresponding to each pixel position of each pixel line of the second field after weaving, a check is performed for the corresponding pixel position for feathering due to motion. A number of detected pixel positions with feathering due to motion is counted and compared against a threshold.

Abstract: An image processing apparatus in which output pixels of an output image are generated with respect to input pixels of an input image, a first subset of the output pixels being identical to respective input pixels and a second subset of the output pixels being derived from respective groups of one or more input pixels. The apparatus includes a spatial filter arrangement for filtering the second subset of pixels, the filter not being applied to filter the first subset of output pixels, the filter arrangement having a response such that high spatial frequencies are attenuated in the output image.

Abstract: A method and system for deinterlacing an interlaced video stream is presented. The method and system determines whether an interlaced video stream is a normal mode video stream or a converted mode video stream. Converted mode video streams, which are interlaced video streams created from an original progressive video stream, are deinterlaced using converted mode deinterlacing, which involves merging two fields to form a frame. Normal mode interlaced video streams are deinterlaced using normal mode deinterlacing, which involves converting a field into a frame using line repeating or some form of interpolation to generate the missing scan lines.

Abstract: An image processing apparatus generating output image pixels from groups of one or more input image pixels, the groups selected in accordance with an image feature direction in the input image. An interpolator interpolates intermediate pixels between the input image pixels, and a block comparator detects correlation between sets of test blocks of pixels in the input image, which sets are oriented with respect to a current pixel position so that the orientation of a set having the greatest correlation indicates a probable image feature direction applicable to the current pixel position. For at least some sets of test blocks having an orientation with respect to the current pixel position within a predetermined range around a vertical orientation, the test blocks include the input image pixels and intermediate pixels interpolated from the input image pixels. For other sets of test blocks, the test blocks include only the input image pixels.

Abstract: A system and method that determines the direction of an edge in a video image using a gradient of the edge in a first direction and a gradient of the edge in a second direction. The system uses the sign of the product of the gradient in the first direction and the gradient in the second direction along with a ratio of multiples of the two gradients to determine the direction of the edge. The direction may correspond to an angle range, where the ratio of the gradients corresponds to a trigonometric function of the angle of the edge.

Abstract: The present invention is arranged such that interlace image data, which has been supplied, is converted to progressive image data in an I/P conversion section, and the image data converted to progressive style in the I/P conversion section is subjected to image processing including data comparison in spatial or time series manner, in an image processing section.

Abstract: A video image conversion method is for converting interlaced image into progressive image. The deinterlacing method for the video system is for converting the interlaced image into the progressive image. The method performs an interpolation algorithm based on the pixel value of a reference field. An inter-field estimation on the pixel values is performed by referring to a predetermined value to calculate difference value between specific vicinity pixel value and predetermined value, to obtain a set of pixel values, corresponding to the minimum value of summation of a set of pixel difference values. The pixel value corresponding to the auxiliary field is interpolated. The reference field and the auxiliary filed are also referred as the odd field and the even field, where neither the interlacing order nor the respective correspondence is constrained. The method further detects a still motion, such that the flickering is effectively eliminated in another interpolation mode.

Abstract: A determining portion first determines which an interpolation pixel position (a target position of image signal) which is positioned in a field that precedes a current field by one field is included in a motion region or a still region by using an image signal of current field and an image signal of two fields before to obtain a determine result of this time. The determining portion finally determines which the interpolation pixel position is included in a motion region or a still region based on the determined result of this time and the history information, which is read out of a memory through a history-information-read-processing portion, on a determined result of past predetermined times(s) corresponding to the interpolation pixel position to obtain a determined result. The memory stores the history information on a determined result of past predetermined times(s) corresponding to each interpolation pixel position.

Abstract: The invention relates to a method and an apparatus for de-interlacing video data by utilizing motion compensation. The method includes performing an operation of motion estimation on a first pixel of the first field and a second target field to generate a first motion vector, wherein the second target field corresponds to the second field; generating a first reference pixel corresponding to the first pixel according to the first motion vector and the second field; and generating a target pixel of a target frame according to the first pixel and the first reference pixel.

Abstract: A method for determining a value for a missing target pixel in an interlaced video field during a de-interlacing process includes providing at least one lookup table that correlates motion data to at least one of a plurality of de-interlacing methods, generating motion data related to the missing target pixel, utilizing the related motion data to perform a lookup on the at least one lookup table, and selecting the at least one de-interlacing method correlated to the motion data to generate the value for the missing target pixel.

Abstract: Video format transformation apparatus including a field/frame assessment module, for associating a field/frame value with a specific pixel. A first value is associated with the specific pixel based on a first function of a group of pixels in proximity to the specific pixel, the group of pixels being in a video frame which includes the specific pixel. A second value is associated with the specific pixel based on a first result and a second result. The first result is of a second function of a second group of pixels, including pixels of an even parity video field within the video frame. The second result is of the second function of a third group of pixels, including pixels of an odd parity video field within the video frame. The field/frame value is associated with the specific pixel based on a third function of the first value and the second value.

Abstract: A method for converting interleaved video frames to progressive video frames is disclosed. Each interleaved frame includes two interleaved fields and each interleaved field includes plural pixels.

Abstract: A method for detecting the Bisection pattern for use in conjunction with the deinterlacing is to improve low angle direction detection capability. A method of Bisection pattern detection operates in an interlaced video containing both top and bottom fields. For each missing pixel in a current input field, a window W is constructed whose center pixel is at the considered missing pixel. A binary map is generated which includes rows of values corresponding to pixels in the window, wherein the values indicate if each element of the window is greater than the sample mean of the area surrounding the missing pixel. The number of value changes in the values in each row of the binary map is counted. It is then determined whether or not the missing pixel is within the Bisection pattern based on said counts. In order to maintain both the low angle edge direction detection capability and low misdetection probability, complicated areas are identified by the Bisection pattern detection method.

Abstract: An apparatus capable of establishing different video sample stream processing channels between a plurality of video sample stream inputs and a video sample stream output is described. The apparatus includes a multi-state routing network comprising wiring to route a video sample stream. The multi-state routing network comprises outputs that are coupled to the inputs of a plurality of video sample stream channel processing segments, where, each channel processing segment comprises at least one signal processing block. The multi-state routing network also comprises inputs that are coupled to the outputs of the video sample stream channel processing segments. The multi-state routing network also comprises the plurality of video sample stream inputs the video sample stream output.

Abstract: An apparatus (24) is provided for interlacing a plurality of input images (I0, I1) to form an output image (O). The interlacing apparatus (24) comprises a programmable memory (20) for storing one or more interlacing configuration patterns (P1, P2 and P3) which define a mapping from pixels of the input images (I0, I1) to pixels of the output image (O). The interlacing apparatus (24) also comprises a pixel data rearranger or interlacer (16) for rearranging pixel data in accordance with a pattern (P) stored in the memory (20). A pattern controller (18) is provided for selecting any one of the patterns (P1, P2 and P3) for use in the interlacer (16). Such an interlacing apparatus (24) can be used to drive a display device such as a multiple view directional display device or an autostereoscopic display device. A deinterlacer, an image compressor and an image decompressor are also provided.

Abstract: The present invention is directed to systems and methods for deinterlacing a video frame by obtaining a video frame, identifying an edge within the frame, selecting a first pixel within the edge, computing a plurality of non-negative threshold values by applying at least one function to a plurality of pixels proximate to the first pixel, obtaining a plurality of second pixel values based upon the computation of non-negative threshold values, and applying a filter function to the selected plurality of second pixel values.

Abstract: An IP conversion unit 20 converts an interlaced image which is an input image into a progressive (non-interlaced) image, and outputs the image. A scene detection unit 30 detects from motion vectors (Mx,My) whether the entire image is being slowly vertically scrolled (outputs a vertical scrolling coefficient tcoef). In a 3D filter 41 of an interlace interference removal unit 40, when vertical scrolling is detected, parallel motion of a plurality of past output images according to an average motion amount is caused according to motion vectors (Mx,My), cumulative pixel values are calculated, and the pixel values are taken to be the output image during vertical scrolling (interpolated image).

Abstract: The present invention provides a method for controlling an interpolation direction of a pixel needing to be interpolated between a first row and a second row within an image. The image has a plurality of pixels arranged in a matrix format. The method includes calculating a plurality of first horizontal pixel value differences between pixels positioned in the first row and a plurality of second horizontal pixel value differences between pixels positioned in the second row. The method further includes comparing the plurality of first horizontal pixel value differences with a first threshold and the plurality of second horizontal pixel value differences with a second threshold to control whether the interpolation direction is orthogonal to the first row and the second row.

Abstract: In one embodiment, an apparatus and method for an angular-directed spatial deinterlacer are disclosed. In one embodiment, the method comprises calculating a cost measure for each of multiple angle candidates for a target pixel block to be deinterlaced in a spatial-only domain, determining a horizontal angle measure for the target pixel block, establishing a global minimum angle from the multiple angle candidates by determining the lowest cost measure from the multiple angle candidates, establishing a local minimum angle from the multiple angle candidates by sifting through the angle candidates in a hierarchical manner, and filtering the global minimum angle and the local minimum angle to create a value for interpolating the target pixel block for deinterlacing. Other embodiments are also described.

Abstract: Given an incoming stream of interlaced video, data for each field is analyzed to detect a progressive frame cadence. If a progressive frame cadence is detected, a set of instructions is generated to instruct a de-interlacing unit which fields were mastered from the same progressive frame. The similarity in motion between two consecutive fields and the correlation between two consecutive fields is used to detect the presence of cadences and breaks in cadences. Breaks in cadences are continuously detected in order to characterize the source as video and prevent false detection of cadences.

Abstract: A video signal processing apparatus, which can prevent degradation of picture quality in converting an interlaced scan video signal to a progressive scan video signal, includes an interframe correlation detection means (11); an interfield correlation detection means (12); a field resolution determination means (13) which generates a signal (filhv) indicative of a degree of high frequency components existing in a field; a pull-down sequence detection means (14) which generates a telecine detection signal (tci) indicating whether or not an input video signal is any of 2-3 pull-down telecine video signal and 2-2 pull-down telecine video signal and also generates a mixing ratio signal (tcmix) indicative of a mixing ratio used at the time of interpolation processing; an interpolation signal generation means (110) which mixes a plurality of kinds of interpolation signals (Im, It) in accordance with the telecine detection signal (tci) and the mixing ratio signal (tcmix); and a rate doubling conversion means (9) whic

Abstract: According to one embodiment, there is provided an image signal processing apparatus includes an interlace-to-progressive conversion circuit and a resolution enhancement circuit. The interlace-to-progressive conversion circuit outputs first signals by performing an interlace-to-progressive conversion process on image signals. The resolution enhancement circuit outputs second signals by performing a resolution enhancement process on the first signals. The resolution enhancement circuit performs the resolution enhancement process not on the first signals on which an interpolation process for dynamic images have been performed.

Abstract: According to one embodiment, a method of increasing a perceived resolution of a display includes directing light at a optical dithering element and repeatedly transitioning the optical dithering element from a first position to a second position and then back to the first position such that the mirror alternately reflects light to a first position on the display and then to a second position on the display. Each transition of the mirror includes controlling any overshoot or ringing in the position of the optical dithering element by providing a predetermined drive signal to the optical dithering element to smoothly accelerate and decelerate the element during the traverse between the first and second positions.

Abstract: The invention generally relates to multimedia data processing, and more particularly, to processing operations performed prior to or in conjunction with data compression processing. A method of processing multimedia data includes receiving Interlaced video frames, obtaining metadata for the interlaced video frames, converting the interlaced video frames to progressive video using at least a portion of the metadata; and providing the progressive video and at least a portion of the metadata to an encoder for use in encoding the progressive video. The method can also include generating spatial information and bi-directional motion information, for the interlaced video frames, and generating progressive video based on the interlaced video frames using the spatial and bi-directional motion information.

Abstract: A moving average filter with a weighting factor calculates a continuously programmable threshold to determine whether fields could be considered identical or not. This decision is used to detect the cadence of a TELECINE encoded video signal. This moving average filter is also used for detecting the presence of still images in the video data stream by detecting total difference in Y (luminance) of the fields and then calculating the average difference in luminance (Y) of the field. This average difference in luminance value indicates a degree of difference between fields. For two frames of data input to the system, each having two fields, a difference is calculated between the luminance values of the two top fields for each frame. From this difference value a maximum absolute difference history is stored, along with the Sum of Absolute Differences (SAD). The programmable threshold is then calculated by summing the saturated SAD history over time.

Abstract: An apparatus for video decoding and de-interlacing contains a video decoder for decoding video data to generate decoded video data of a next picture; a storage device coupled to the video decoder, the storage device having four frame buffers for buffering the decoded video data of the next picture into one of the four frame buffers according to data stored in the frame buffers; an interlace/progressive converter coupled to the storage device, for de-interlacing data stored in the frame buffers to generate corresponding progressive video data; and a controller coupled to the video decoder and the interlace/progressive converter, for controlling data access of the video decoder and the interlace/progressive converter to the frame buffers of the storage device.

Abstract: A method and device for interpolating a pixel of an interline of a first field in a sequence of interlaced fields includes selecting at least one first pixel and one second pixel from scan lines of the first field adjacent the interline, and a third pixel from a second field temporally preceding or following the first field. The image position of the third pixel corresponds to the image position of the pixel to be interpolated. Also selected are fourth and fifth pixels which lie vertically adjacent the third pixel in the second field. A first filter value is generated by low-pass filtering the at least one first and second image information values. A second filter value is generated by high-pass filtering the third, fourth and fifth image information values. An image information value of the interpolated pixel is generated using the first and second filter values.

Abstract: A plurality of interlaced video signals respectively corresponding to a plurality of continuous fields are generated by first, second, and third one-field delay circuits on the basis of an inputted interlaced video signal. A first progressive video field signal is generated by a first progressive video generation circuit on the basis of the plurality of interlaced video signals. A second progressive video field signal is generated by a second progressive video generation circuit on the basis of the plurality of interlaced video signals. Motion amount information in the vertical direction of a picture is calculated by a comparison circuit on the basis of the first progressive video field signal and the second progressive video field signal.

Abstract: The present invention relates to the field of video data de-interlacing, and in particular to a method for reconstructing full-resolution frames from a line-skipped-sequence of fields and a corresponding apparatus. It is the particular approach of the present invention to substitute missing lines of a block of a reconstructed full-resolution frame by lines from another field, e.g. the preceding field, and translating the substitute lines vertically and horizontally so as to optimized a smoothness measure computed for the thus reconstructed block. In this manner, an error-prone a priori determination of motion vectors based an interpolation of the interlaced images in the vertical direction can be avoided. The present invention may also be applied to sequences generated from a full-resolution sequence by a line-skipping operation that keeps only every Kth line and discards the other K?1 lines.

Abstract: A method for authoring a Video CD in an information handling system includes creating chapter breaks as a function of video footage imported from a source. A static menu is created as a function of the chapter breaks. The video footage is transcoded. Lastly, the transcoded video footage and the static menu are burned onto a Video CD storage medium, wherein the static menu is configured to enable random access of the transcoded video footage according to the chapter breaks during a video playback.

Abstract: A system and method that produces a spatial average for interlaced video in a deinterlacer. The system detects edges in the video images and determines the angle at which the edges are oriented based on the gradient in the x-direction and the gradient in the y-direction. The direction of the edge is determined using the angle information of the edge. The system may also determine the strength of the edge. Based on the determined characteristics of the edge a filter may be selected to produce a spatial average of the edge in the image.

Abstract: A method for detecting a generation sequence of an interlace picture signal for interlace/progressive conversion includes a step for performing motion detection for each pixel by a two-field difference with respect to a picture signal of the n-th field (n is an integer), so as to obtain a two-time statistic value from the number of pixels having a motion, a step for obtaining a one-time statistic value from an accumulated value of one-field differences for pixels that are detected to have a motion by the two-field difference with respect to the picture signal of the n-th field, and a step for detecting whether or not a generation sequence of an input picture signal is an edit sequence in which a progressive picture is edited for generation, by using the obtained two-time statistic value and the one-time statistic value.

Abstract: An interlace motion artifact detector which identifies video image spatial frequencies characteristic of motion artifacts. The detected frequency is the maximum which can be represented by the vertical sampling rate of the video format (i.e., the Nyquist frequency). This frequency is detected by a pair of partial Discrete Fourier Transforms (DFT) which each calculate only the frequency component of interest. Additional vertical frequency components at one half and one quarter the interlace motion artifact frequency are also detected via a partial DFT. The presence of these lower frequencies acts as an indication of an erroneous motion artifact detection. Additionally, the dynamic range and maximum level of the video data is used as an indication of when to boost the frequency detection levels in areas of low brightness and/or contrast.

Abstract: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) calculating a potential sample at a location interfaced with a first field of the picture by temporal filtering, (B) evaluating a protection condition in a current region around the location after inclusion of the potential sample and (C) calculating an interpolated sample at the location by vertical spatial filtering the first field in response to the protection condition indicating a significant increase in a vertical activity within the current region due to the potential sample.

Abstract: To provide an image processing device able to generate a progressive image signal in high quality based on an interlaced image signal and an image processing method for the same, wherein a continuity detection circuit detects continuities in the interlaced image signal and to the field image signal, a moving circuit moves one of the field image signals before and behind one field based on a motion vector between the field image signals before and behind one field to generate a first field image signal, and an image signal generation circuit decides a mixture ratio based on the continuity and mixes the first field image signal and a second field image signal based on a line in the field image signal at the mixture ratio to generate a third field image signal included in the progressive signal.

Abstract: Herein described is at least a method and system for deinterlacing an interactive or non-interactive video. The method comprises receiving a control signal by a user that indicates whether the video is an interactive video or a non-interactive video. The method further comprises deinterlacing the video such that an amount of delay to the video is incurred through a deinterlacer, wherein the amount of delay is based on the control signal. In a representative embodiment, the system comprises one or more first inputs for providing interactive video to a deinterlacer, one or more second inputs for providing non-interactive video to the deinterlacer, and a circuitry for selecting one input of the one or more first or the one or more second inputs based on a control signal.

Abstract: A content-dependent scan rate converter with adaptive noise reduction that provides a highly integrated, implementation efficient de-interlacer. By identifying and using redundant information from the image (motion values and edge directions), this scan rate converter is able to perform the tasks of film-mode detection, motion-adaptive scan rate conversion, and content-dependent video noise reduction. Adaptive video noise reduction is incorporated in the process where temporal noise reduction is performed on the still parts of the image, thus preserving high detail spatial information, and data-adaptive spatial noise reduction is performed on the moving parts of the image. A low-pass filter is used in flat fields to smooth out Gaussian noise and a direction-dependent median filter is used in the presence of impulsive noise or an edge. Therefore, the selected spatial filter is optimized for the particular pixel that is being processed to maintain crisp edges.

Abstract: To carry out de-interlacing of digital images there is provided a spatial-type de-interlacing process to be applied to a digital image for obtaining a spatial reconstruction. Furthermore, to the digital image there are also applied one or more temporal-type de-interlacing processes for obtaining one or more temporal reconstructions, and the spatial reconstruction and the one or more temporal reconstructions are sent to a decision module. The decision module applies a cost function to the spatial reconstruction and the temporal reconstructions and chooses from among the spatial reconstruction and the temporal reconstructions the one that minimizes the cost function. Preferential application is to display systems, in particular displays of a cathode-ray type, liquid-crystal type, and plasma type which use a mechanism of progressive scan.

Abstract: An image de-interlacing method for estimating an interpolation luminance of an interpolated pixel, including: selecting a plurality of first and second candidate pixels respectively on upper and lower lines adjacent to the interpolated pixel, calculating a plurality of weighted directional differences respectively associated with one of the first candidate pixels and one of the second candidate pixels with weighting values determined by comparing similarity of luminance decreasing/increasing patterns near the associated first and second candidate pixels on the upper and lower lines, selecting a first selected pixel and a second selected pixel respectively from the first and second candidate pixels associated with the smallest weighted directional difference, and obtaining the interpolation luminance according to the first and second selected pixels.

Abstract: An image de-interlacing method for estimating an interpolation luminance of an interpolated pixel improving interpolation quality of oblique lines comprises selecting a plurality of candidate interpolation directions extending from one of a plurality of first candidate interpolation pixels to one of a plurality of second candidate interpolation pixels respectively on top and bottom lines adjacent to the interpolated pixel, classifying the candidate interpolation directions with first candidate interpolation pixels located at the upper left, upper right, and upper middle of the second candidate interpolation pixel respectively into first, second, and third directional groups, and selecting one or all of the directional groups to obtain the interpolation luminance of the interpolated pixel according to whether regions around the interpolated are present in an ambiguous area of an oblique line, and if so, further according to direction type (and color type) of the oblique line.

Abstract: A deinterlacing method and apparatus for converting an interlaced format into a progressive format are provided. The deinterlacing method includes receiving a plurality of interlaced video fields; extracting a previous video field having a same field identifier as a currently input video field from the interlaced video fields; detecting motion by comparing the extracted previous video field with the currently input video field; and interpolating the currently input video field according to a result of detecting the motion. The apparatus includes an input unit; a first field memory; a second field memory; a motion detection unit which detects motion by comparing a previous video field stored in the first field memory with the currently input video field; and a temporal interpolation unit which, if motion is detected, performs temporal interpolation with respect to the currently input video field using only the previous video field stored in the second field memory.