Abstract: A technique for detecting original scan lines is disclosed. The technique involves receiving a deinterlaced signal with even scan lines and odd scan lines. After the deinterlaced signal is received, a determination is made as to whether the even scan lines or the odd scan lines are the original scan lines. In certain embodiments, an interlaced signal can be generated from the original scan lines. In other embodiments, an optimized deinterlaced signal can be generated using the original scan lines.

Abstract: An image processing apparatus in which output pixel values are generated with respect to pixels of an input image selected in accordance with an image feature direction in the input image. The apparatus includes a mechanism comparing blocks of pixels of the input image, the blocks being disposed with respect to a pixel position under test so that a correlation between the blocks would indicate an image feature direction applicable to that pixel position; and a mechanism detecting the image feature direction applicable to the pixel position under test as a direction corresponding to a block comparison for blocks having the highest correlation amongst blocks having block contents meeting one or more predetermined criteria.

Abstract: Method and devices are provided for processing an image in which a row of pixels with associated light intensity values successively alternates with a row of pixels to which values are to be associated. In each current row of pixels with associated values, pixels are selected which satisfy a selection rule based on the values for the pixels in the current row with associated values and on the values from the previous and/or the next row with associated values, and segments of pixels are detected. In this manner a set of segments is obtained relative to the image being processed, from which a graph of segments is created by linking the segments according to a linking rule. Then the respective values to be associated with at least some of the pixels in the rows to be assigned values are determined by interpolation from segments in the graph which form a path in the graph.

Abstract: Interlaced-to-progressive conversion with (1) 3-2 pulldown detection, (2) pre-filtering for field motion detection, (3) field motion detection with feedback, (4) field edge detection including direction angle detection by comparison of pixel differences with sets of more than pairs of pixels and a lateral edge detection probability by a lack of non-lateral angle detection, and (5) blending moving pixel interpolation and still pixel interpolation using field uniformity.

Abstract: The invention relates to interpolation of an image information value for a pixel of an interline. The method comprises selecting, from a number of image directions, to each of which a direction quality value is assigned, a direction of interpolation by comparing these direction quality values. The image information value being interpolated is determined in dependence on image information values assigned to pixels lying adjacent to the pixel being interpolated in the direction of interpolation. To ascertain a direction quality value for an image direction a pixel group having at least two pixels is selected; a single direction quality value for each pixel of the pixel group is determined, the single direction quality value being dependent on image information values assigned to image regions lying adjacent to the particular pixel of the group in the image direction; and a direction quality value is created as a function of the single direction quality values of the pixel group.

Abstract: A method of de-interlacing input video information including averaging odd lines and averaging even lines of the input video information to determine first and second in-field information, determining differences between even and odd lines of the input video information to provide residue information, measuring a motion metric of the residue information, filtering the residue information based on the motion metric to provide filtered residue information, and combining the first and second in-field information with the filtered residue information to provide progressive information. The combining may be an average of the in-field information added to a weighted portion of the filtered residue information as determined by the motion metric. The motion metric may be determined by an infinite impulse response filter. Finite impulse response filters may be used to filter the residue information.

Abstract: A technique for deinterlacing an interlaced video stream is disclosed. A method according to the technique can involve calculating a gradient of image intensity and identifying an edge. A bin can be selected that encompasses the edge. An unknown pixel can be calculated by blending known pixel values along the bin boundaries.

Abstract: A method for reduced memory and bandwidth motion adaptive video deinterlacing is disclosed. The method generally includes the steps of (A) generating a frame by deinterlacing a current field in a first of a plurality of modes, (B) generating the frame by deinterlacing using both of the current field and an opposite-parity field in a second of the modes and (C) generating the frame be deinterlacing using all of the current field, the opposite-parity field and another field in a third of the modes, wherein the method uses at least two of the modes.

Abstract: An update method for look up table (LUT) is suitable for an image processing apparatus. The image processing apparatus includes a multiple-interpolation lookup table device having an execution LUT, and the LUT update method updates the multiple-interpolation lookup table device according to a source LUT. The update method includes the steps of dividing the source LUT into a plurality of sub LUTs; and using the sub LUTs to respectively update content of the execution LUT in a plurality of vertical blanking intervals (VBIs).

Abstract: A method for motion adaptive video deinterlacing is disclosed. The method generally includes the steps of (A) in a first plurality among a plurality of modes, generating a frame by deinterlacing a current field using a plurality of memory bandwidth configurations and (B) in a second plurality among the modes, generating the frame by deinterlacing the current field using a plurality of linestore configurations.

Abstract: A display controller capable of detecting data line similarity is provided. The display controller includes a buffer for temporarily storing a plurality of data lines of a target field, a data line similarity detector, coupled to the buffer, for detecting a similarity of each data line of the target field, a data line state recorder for recording the similarity of each data line of the target field, a de-interlacer coupled to the buffer, and a scaler coupled to the de-interlacer, wherein the de-interlacer selectively de-interlaces the target field according to the content stored in the data line state recorder in order to generate a de-interlaced output, and the scaler generates a scaling output according to the de-interlaced output.

Abstract: A method for converting video data in a first video format to video data in a second interlaced video format comprising: determining a number of frames of the first video format to map into a frame of the second video format, the frame of the second video format having four fields; determining a number of lines from each of the number of frames of the first video format to be mapped into each of the four fields of the frame of the second video format; selecting the determined number of lines from each of the number of frames of the first video format; determining a sequence for mapping the number of selected lines into the fields of the frame of the second video format; and mapping the selected lines from each of the number frames of the first video format into the four fields of the frame of the second video format according to the determined sequence.

Abstract: A head-mounted visual display device for low-vision aid, which features 2 models, they are analog signal model and digital signal model. Said analog device contains at least an analog video extractor, a video decoder, an ITU-R.656 decoder, a de-interlacing unit, an image processor, two YCbCr to RGB converter, two color enhancement units, two video D/A converter, a head mounted display, a signal voltage controller and a wireless communication module. Said digital device consists of a digital video signal extractor/capturer, a RGB to YCbCr converter, an image processor, two YCbCr to RGB converter, two color enforcement units, a head-mounted display, a signal voltage controller and a wireless communication module.

Abstract: A head-mounted visual display device for low-vision aid, which features 2 models, they are analog signal model and digital signal model. Said analog device contains at least an analog video extractor, a video decoder, an ITU-R.656 decoder, a de-interlacing unit, an image processor, two YCbCr to RGB converter, two color enhancement units, two video D/A converter, a head mounted display, a signal voltage controller and a wireless communication module. Said digital device consists of a digital video signal extractor/capturer, a RGB to YCbCr converter, an image processor, two YCbCr to RGB converter, two color enforcement units, a head-mounted display, a signal voltage controller and a wireless communication module.

Abstract: A video de-interlace apparatus and a method thereof are disclosed. The apparatus includes a combing detection apparatus and a de-interlace format determining apparatus. The combing detection apparatus receives a plurality of successive fields, performs combing detection to the fields, and outputs a combing detection result. The de-interlace format determining apparatus receives the combing detection result and compares the combing detection result with a plurality of models. When the combing detection result is conform to a specific model among the models, the de-interlace format determining apparatus determines a specific de-interlace format corresponding to the specific model to de-interlace the foregoing fields.

Abstract: Pipelining techniques to deinterlace video information are described. An apparatus may comprise deinterlacing logic to convert interlaced video data into deinterlaced video data using multiple processing pipelines. Each pipeline may process the interlaced video data in macroblocks. Each macroblock may comprise a set of working pixels from a current macroblock and supplemental pixels from a previous macroblock. Other embodiments are described and claimed.

Abstract: Pipelining techniques to deinterlace video information are described. An apparatus may comprise deinterlacing logic to convert interlaced video data into deinterlaced video data using multiple processing pipelines. Each pipeline may process the interlaced video data in macroblocks. Each macroblock may comprise a set of working pixels from a current macroblock and supplemental pixels from a previous macroblock. Other embodiments are described and claimed.

Abstract: A scanning line interpolating apparatus has a scanning line interpolating unit for converting an inputted interlaced scanning picture to a progressive scanning picture by using motion compensation, a motion vector search device that searches for a motion vector for use in the motion compensation, and a control unit for controlling the precision with which the motion vector is searched for. The control unit is adapted to determine the search precision on the basis of a pixel structure of a display device for displaying the progressive scanning picture.

Abstract: An edge adaptive de-interlacing apparatus and method are disclosed. The edge adaptive de-interlacing apparatus includes a complexity detection module, a qualifier, a comparator and a mixer. The complexity detection module detects complexity associated with a target pixel. The qualifier is coupled to the complexity detection module for generating similarity of at least one possible edge angle in response to the complexity. The comparator is coupled to the qualifier for comparing the similarity of the at least one possible edge to select a preferred edge angle. The mixer is coupled to the comparator for generating pixel data of the target pixel according to the preferred edge angle.

Abstract: An edge adaptive de-interlacing apparatus and method are disclosed. The edge adaptive de-interlacing apparatus includes a complexity detection module, a qualifier, a comparator and a mixer. The complexity detection module detects complexity associated with a target pixel. The qualifier is coupled to the complexity detection module for generating similarity of at least one possible edge angle in response to the complexity. The comparator is coupled to the qualifier for comparing the similarity of the at least one possible edge to select a preferred edge angle. The mixer is coupled to the comparator for generating pixel data of the target pixel according to the preferred edge angle.

Abstract: Techniques are provided for facilitating processing of interlaced video images for progressive video displays. A method receives from a renderer a query for a graphics device driver to a graphics processing capability that can be performed by an associated graphics device in de-interlacing video data, communicating the query to the graphics device driver, receiving from the graphics device driver a response to the query that identifies the graphics processing capabilities to the renderer, and communicating the response to the renderer.

Abstract: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) generating a plurality of primary scores by searching along a plurality of primary angles for an edge in the picture proximate a location interlaced with a field of the picture, (B) generating a plurality of neighbor scores by searching for the edge along a plurality of neighbor angles proximate a particular angle of the primary angles corresponding to a particular score of the primary scores having a best value and (C) identifying a best score from a group of scores consisting of the particular score and the neighbor scores to generate an interpolated sample at the location.

Abstract: A method of processing digital video signals, comprising: receiving input pixels to be processed; performing multiple processing operations on the input pixels, where the multiple processing operations are performed during a time interval determined in part by a desired video output rate; and performing a classification analysis at an intermediate time during the time interval, the classification analysis yielding tag data that is used to dynamically vary one or more of the multiple processing operations, and where the tag data is generated on a per-pixel basis to enable pixel by pixel variation of the multiple processing operations.

Abstract: A method for processing video information may include calculating a polarity change count (PCC) for a plurality of pixel pairs selected from a plurality of pixels from different fields utilizing a plurality of difference polarity values associated with the plurality of pixel pairs. At least a portion of the plurality of pixels from different fields may be deinterlaced based on at least the calculated PCC. The plurality of difference polarity values may be calculated for the plurality of pixel pairs selected from the plurality of pixels from different fields. At least one difference in amplitude of at least one of the selected pixel pairs may be calculated for the calculating the plurality of difference polarity values. The plurality of pixels from different fields may comprise a plurality of adjacent pixels from a plurality of woven fields.

Abstract: A pixel interpolation process is based on detection of a potential edge in proximity to a pixel being estimated, and the angle thereof. The potential edge and its angle is determined based on filtering of offset or overlapping sets of lines from a pixel window centered around the pixel being estimated and then cross-correlating the filter results. The highest value in the correlation result values represents a potential edge in proximity to the pixel being estimated and the index of the highest value represents the angle of the potential edge. This information is used in conjunction with other information from the cross-correlation and analysis of the differences between pixels in proximity to verify the validity of the potential edge. If determined to be valid, a diagonal interpolation based on the edge and its angle is used to estimate the pixel value of the pixel. Otherwise, an alternate interpolation process, such as vertical interpolation, is used to estimate the pixel value for the pixel.

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: Certain aspects of a method and system for inverse telecine and field pairing may comprise receiving a plurality of fields of alternating polarity. A current field may be weaved with its corresponding adjacent field of opposite polarity. A polarity change count value may be calculated based on the weaving of the current field with its corresponding adjacent field of opposite polarity. The method may determine whether to utilize a progressive scheme or an interlaced scheme to encode the received plurality of fields of alternating polarity based at least in part on the calculated polarity change count value. At least one of a top field first (TFF) scheme, a bottom field first (BFF) scheme, a top field first-repeat first field (TFF-RFF) scheme and a bottom field first-repeat first field (BFF-RFF) scheme may be chosen to pair the plurality of fields of alternating polarity.

Abstract: A display apparatus including an image receiver receiving an image signal and a display displaying the image signal. The display apparatus includes a user selector, an image signal processor to process at least one image delay decrease mode to decrease a processing time of the image signal and a controller to control the image signal processor to process the image signal according to the selected image delay decrease mode if an image delay decrease mode is selected through the user selector.

Abstract: There is provided a method for converting an image with N rows of pixels present and N rows of pixels missing to an image with 2N rows of pixels, wherein the missing pixels are generated by performing a deinterlacing algorithm. The algorithm determines whether missing pixels are part of a horizontal edge region, a smooth region, a vertical edge region or a texture region. Based on the determination, a deinterlacing method is selected.

Abstract: A method includes determining a lowest-score interpolation direction among a plurality of interpolation directions. The method further includes calculating a candidate pixel value by interpolating along the lowest-score interpolation direction. The method further includes applying a median function to a set of pixel values. The set of pixel values includes (a) the candidate pixel value, (b) at least one pixel value from a line of pixels that is immediately above a pixel location that is currently being interpolated, and (c) at least one pixel value from a line of pixel values that is immediately below the pixel location that is currently being interpolated.

Abstract: Image deterioration when image data containing scanning lines of the previous and next fields mixed together by video editing is displayed is prevented. An inter-field scanning line interpolating unit superimposes scanning line data of the previous and next fields of interlacing image data in a video stream input from a tuner or a memory card to perform inter-field scanning line interpolation, and generates progressive image data corresponding to that video stream. An IP-conversion selection signal indicating a determination result whether or not the reliability of the video stream meets a predetermined level is input into a back-end from a CPU. A selector refers to the IP-conversion selection signal, and when the CPU determines that the reliability of the video stream is lower than the predetermined level, image data having undergone interpolation by the inter-field scanning line interpolating unit is selected as an image to be displayed.

Abstract: A video processor receives an interlaced video comprising source video content and video overlay content. A progressive video of the received interlaced video is used for video overlay detection. The received interlaced video is deinterlaced and converted to a high frame-rate progressive video for display. Video overlay detection and frame based cadence detection are performed independently during frame-rate conversion. Candidate cadences are detected for each video frame. Decisions on final cadences for each video frame are made based on the detected candidate cadences and the detected video overlay content. A frame-rate upconversion is performed according to the final cadence detection decisions. Video frame differences between each video frame and associated adjacent video frames are generated for video overlay detection. Pixel values per line are integrated for each generated video frame difference.

Abstract: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) generating a plurality of primary scores by searching along a plurality of primary angles for an edge in the picture proximate a location interlaced with a field of the picture, (B) generating a plurality of neighbor scores by searching for the edge along a plurality of neighbor angles proximate a particular angle of the primary angles corresponding to a particular score of the primary scores having a best value and (C) identifying a best score from a group of scores consisting of the particular score and the neighbor scores to generate an interpolated sample at the location.

Abstract: Presented herein are system(s), method(s), and apparatus for motion adaptive directional deinterlacing. In one embodiment, there is presented a method for interpolating a pixel for a pixel position. The method comprises receiving a plurality of pixels above the pixel position; receiving a plurality of pixels below the pixel position; and measuring gradients in a plurality of directions between the pixels above the pixel position and the pixels below the pixel position.

Abstract: An image processing device and a deinterlacing process thereof are provided. The deinterlacing process reads a memory to retrieve ten pixels of an image field that are temporarily stored in the memory, wherein the ten pixels are located on a first column, a second column, a third column, a fourth column and a fifth column of a first row and a second row of the image filed. Then, the deinterlacing process estimates the data of an interpolated pixel according to the data of the ten pixels. The interpolated pixel is inserted between the first and second rows of the image field on the third column to form a deinterlaced image frame.

Abstract: Previously-produced motion pictures are enhanced for theatrical exhibition, at double the frame rate at which they were originally produced. Synthesized images are interpolated between each of the images of the original motion picture. These interpolated images are generated through the use of computer software that analyzes the actual horizontal and vertical displacement of each pixel of every image of the original motion picture, so the interpolated images accurately depict the exact image that would have been captured, if the original motion picture had been produced at double the actual frame rate of production. This enhancement technique can be used selectively for certain scenes or sequences. The invention uses the 70 mm film format or digital equivalent, with picture information added to films produced in a 35 mm format. For image components containing complex motion, those components are selected for treatment to correct for such complexity. The entire process can be executed automatically.

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 video signal processing apparatus includes a main picture processor, an interlace recovering module and a video encoder. The main picture processor produces corresponding main picture signals based on video signals from a memory. The main picture signals are converted to progressive scan signals through a predetermined video signals processing. The interlace recovering module receives the progressive scan signals, retrieves the even portion and the odd portion of the progressive video signals alternately, and generates a set of interlace-scan signals. The video encoder receives both the progressive scan signals and the interlace scan signals and generates a set of progressive video signals and a set of interlace video signals to corresponding video display apparatuses. Thereupon, the video reproduction system can simultaneously provide both the progressive video signals and interlace video signals to the video display apparatuses.

Abstract: One embodiment of the present invention sets forth a method for detecting a bad edit. The method includes receiving a 3:2 film-mode video signal comprising a sequence of video fields, for each of the sequence of video fields, determining a state for the each video field based on a first moving-pixel count for the each video field with respect to a previous same-parity video field for the each video field and a second moving-pixel count for a first immediately preceding field for the each video field with respect to a second previous same-parity field for the first immediately preceding field, and identifying the 3:2 film-mode video signal as a bad edit if a predetermined state transition has been detected in the sequence of video fields.

Abstract: Methods and apparatuses are provided for facilitating processing of interlaced video images for progressive video displays. In accordance with certain exemplary implementations, a method includes receiving from a renderer a query for a graphics device driver as to at least one graphics processing capability that can be performed by an associated graphics device in de-interlacing video data, communicating the query to the graphics device driver, receiving from the graphics device driver a response to the query that identifies the graphics processing capability/capabilities to the renderer, and communicating the response to the renderer.

Abstract: A image processing apparatus includes an interlace/progressive converter that converts interlaced input image data into progressive image data; an up-convert material detector that detects low quality up-convert material likelihood of the interlaced input image data; and an image processor that obtains output image data by processing progressive image data on the basis of the detected signal of the up-convert material detector, wherein the up-convert material detector detects the low quality up-convert material likelihood on the basis of ratio of the sum of an inter-field pixel value difference and the sum of in-field pixel value difference, the pixels in a predetermined area being obtained as sequential notable pixels using image data of a first field and a second field that are continuous in each field.

Abstract: A scanning-line interpolating circuit is provided which is capable of reducing jaggies on slanting lines and of keeping smoothness of interpolating signals achieved by using slanting lines having multiple angles for interpolation and of suppressing failures in displaying caused by erroneous judgement. When it is judged that there is matching in pixel data between three pixels or more on an upper line and three pixels or more on a lower line, an interpolating angle judging signal is corrected to be another interpolating angle judging signal corresponding to interpolation in up-and-down directions and isolated point is removed and another interpolating angle judging signal is output. Interpolating signals are blended with other interpolating signals corresponding to interpolation in same directions and at different angles and another interpolating signals are produced. One of second interpolating signals is selected based on the interpolating angle judging signal and an interpolating signal is produced.

Abstract: An image-processing method determines the interpolation reliability for interpolated pixels in a progressive image, generated by interpolation of an interlaced image, by combining at least any of a first interpolation reliability determined based on the absolute value of the difference between pixels in an upper line and pixels in a lower line used to calculate the value of the interpolated pixels, a second interpolation reliability determined based on the width of the region used to determine the pixels in the upper line and the pixels in the lower line used to calculate the value of the interpolated pixels, and a third interpolation reliability determined by combining the change in luminance for the upper line and the change in luminance for the lower line within the region.

Abstract: Disclosed herein is an image signal processing apparatus configured to convert an interlaced signal into a progressive signal, including: a first conversion unit; a second conversion unit; a decision unit; and a selection unit.

Abstract: A frame rate converter device and method for interpolation during frame rate conversion are disclosed. The method includes, receiving input frames containing film content and video content. The film content exhibits a 3:2 pull-down cadence while video content that does not exhibit such cadence. Consecutive frames Cn and Cn+1 are interpolated to form Fn using the frame rate converter. The frame rate converter further selects as an output frame, either current or previous ones of interpolated frames or input frames. The selection is made so as to reduce both film judder and video judder. The invention is suitable for use on video input frames at 60 frames per second (fps) derived from a 24 fps cinema using 3:2 pull-down, and also blended with 60 Hz overlay video such as subtitle text. The invention can be used to obtain a good overall reduction in both overlay video judder and film judder.

Abstract: When an input video source is a movie source, even then if the input video source contains a lot of noise, pulldown can be accurately detected by controlling a gain of a first noise removal circuit based on a pulldown detected state detected from a frame difference value between an input video signal and its frame-delayed video signal to increase the magnitude of the frame difference, and inserting a comparison threshold for determining whether the frame difference is large or small to a stable position, to improve the detection accuracy of a pulldown detection circuit. Moreover, after interlaced/progressive conversion is performed by an IP conversion circuit, a resultant progressive video signal is processed by a second noise removal circuit so that noise originally contained in the input video signal is removed, resulting in a high-quality output video signal.

Abstract: When a frame rate is doubled by repeating video signals of respective frames twice and then resultant video signals are supplied to the overdrive circuitry, the number of cases where the effect of overdrive is not sufficiently obtained is likely to increase undesirably. A double-speed conversion section inserts, between video signals of an N-1th frame and an Nth frame following the N-1th frame which are input video signals, an N-1th interpolation frame video signal at a signal level same as that of the N-1th frame video signal, and outputs resultant video signals at a frame rate twice as high as that of the input video signals. An interpolation frame correcting section corrects the N-1th interpolation frame video signal outputted from the double-speed conversion section, in accordance with the signal levels of the N-1th frame video signal and of the Nth frame video signal.

Abstract: Presented herein are system(s), and method(s), for interlaced to progressive conversion using weighted average of spatial interpolation and weaving. In one embodiment, there is presented a deinterlacer for deinterlacing. The deinterlacer comprises a first circuit and a second circuit. The first circuit measures weave artifacts between an alternate field and a field for a pixel at a pixel position in the alternate field. The second circuit generates a pixel value for the pixel position in the field, where the pixel value is the weighted average of the pixel, and an interpolated value from two or more pixels from the field, where the weighted average is a function of the weave artifacts.

Abstract: An information signal processor that is well suitable for use in conversion of an SD signal into an HD signal. The pixel data set corresponding to an objective position in the HD signal is extracted selectively from the SD signal. Class CL to which pixel data set of the objective position belongs is then obtained using the pixel data set. A coefficient production circuit produces coefficient data sets Wi for each class based on coefficient seed data sets and values of picture quality adjusting parameters h and v. A tap selection circuit selectively extracts the data sets xi from the SD signal and then, a calculation circuit produces the pixel data sets of the objective position in the HD signal using the data sets xi and the coefficient data sets Wi. It is thus possible to save on the storage capacity of the memory.

Abstract: A video processing system may include a shared memory, a motion compensated temporal filter (MCTF) and a motion compensated or motion adaptive de-interlacer. The MCTF and/or the de-interlacer may read noise reduced pixel data from the shared memory. The MCTF may estimate motion and/or motion vectors between fields, may determine a method for noise reduction and may send noise reduced pixel data to the shared memory and to the de-interlacer. The de-interlacer may read a current field of noise reduced pixel data from the MCTF and one or more fields from the shared memory. The de-interlacer may estimate motion and/or motion vectors between fields and may write quantized estimated motion to the shared memory. Based on the estimated motion and/or motion vectors, the de-interlacer may determine a method for estimating missing pixel data and may generate new pixel data for the missing pixel data in an interlaced field.