Abstract: A facsimile apparatus including image data conversion unit for converting image data corresponding to an image to be printed in such a manner that two adjacent dots on a main scanning line of the image data are converted into one dot a smoothing unit connected to the conversion unit for modifying converted image data in such a manner that, if a pattern of a region formed by a predetermined number of converted dots coincides with a predetermined pattern, the converted image data is changed to have a pattern corresponding to the predetermined pattern in the region; and selection unit connected to the image data conversion unit and the smoothing unit and adapted to select an output of the image data conversion unit as printing data if it is detected that the image data has been transmitted in a fine mode, and select an output of the smoothing unit as printing data if it is detected that the image data has been transmitted in a standard mode.

Abstract: A facsimile device, which receives picture data of an original document, which is constituted by a plurality of data lines, through a telephone line and records the received picture data onto a record sheet, has a counting device for counting the number of the received data lines, an operation device for comparing the number of the data lines with a predetermined value and evaluating the number of data lines exceeding the predetermined value as an excess number, a determination device for determining whether each of the received data lines is valid or invalid picture data, a data processing device for removing the data lines that are invalid picture data, the number of which corresponds to the excess number, out of the received data lines in accordance with the determination by the determination device, and a recording device for recording the remaining received data lines processed by the data processing device onto the record sheet. A processing method is also disclosed and claimed.

Abstract: A binary image reduction method for reducing a binary original picture at a conversion ratio .alpha..sub.x smaller than 1 in a horizontal direction and at a conversion ratio .alpha..sub.y smaller than 1 in a vertical direction to obtain a converted picture,x satisfying 1/nx>.alpha..sub.x .gtoreq.1/(n.sub.x +1)y satisfying 1/n.sub.y >.alpha..sub.y .gtoreq.1/(n.sub.y +1)where n.sub.x and n.sub.y are natural numbers,The method being composed of the steps of:obtaining a positional relationship between a target of converted pixels of the converted picture and original pixels on the original picture,forming a rectangular area on the original picture having a side of 2(n.sub.x +1) original pixels in the horizontal direction and a side of 2(n.sub.

Abstract: There are disclosed method and apparatus for magnifying an image with use of a single image memory.In this system, it is checked whether or not the magnified image is rewritten into the image memory overlapped onto the original image to be magnified and, if a possible overlapping is detected, a border line on which the magnified line image is overlapped with the original line image to be magnified is calculated. In this case, the order of the magnifying processing is reversed between two areas bounded by the border line.

Abstract: A copier has the capability to determine the size of the original document, or a designated portion thereof, for purposes of auto scaling, auto paper select, and/or window scaling, to set image magnification parameters, and to process the image signal according to the set parameters in but a single scan of the original document. The copier forms an image on a copy sheet based on a supplied series of electrical data signals. Document recognition determines the size of an original document from a series of electrical data signals, and a series of electrical data signals representative of the image content of a document is stored in memory. The size of a copy sheet and the size of the formed image are matched in accordance with the document recognition in response to but a single scan of an original document. A portion of an original document and a magnificaiton ratio may be designated for scaling.

Abstract: An image-scanning apparatus for inputting image data to an image processing device. The apparatus includes an image document holding cassette for holding an image document, a document holder stacker for storing the image document holding cassettes therein, and supplying the image document holding cassette into a scanner, the scanner for irradiating the image document located on a document supporting table and inputting the image data from the irradiated image document with an input sensor through a magnification mechanism, the magnification mechanism for changing the magnification of the image document at said input sensor so that the magnification of the image data is changed, and the document supporting table being capable of changing the angle of the image document to the scanner so that the angle of the image data is changed.

Abstract: An electronic filing device, comprising an electronic computer such as a personal computer and an image processing device, in which the electronic computer is provided with a data port and a video port and controls the image processing device by using commands and data given to the image processing device by the electronic computer through the data port and image information outputted by the electronic computer through the video port is enlarged within the image processing device, synthesized with image data searched by the image processing device, and displayed on a display device in the image processing device.

Abstract: An image reader having a scanning optical means for a document, a projection lens and an image sensor for reading an image of a document is disclosed. The image reader includes a pattern element on which a predetermined pattern having two edges symmetric with respect to the optical axis of the projection lens at a predetermined reading magnification and a circuit for determining the center position of an image of a document based on data obtained when the predetermined pattern is read by the image sensor through the projection lens at a designated reading magnification.

Abstract: An image reading and processing apparatus in which an image-carrying medium is scanned along a predetermined path in a line-by-line manner and, during each cycle of line scanning, image data is produced from a line of pixels on the scanned image-carrying medium and is stored into image data memories for each line of pixels on the image-carrying medium while data-write and data-read address signals are generated by first and second address generators and are supplied independently of each other to the image data memories, the second address generator being operative to supply the data-read address signal to the image data memories at a timing regulated on the basis of a signal indicative of a magnification/reduction ratio at which an image on an image-carrying medium is to be reproduced, wherein there are further provided an attribute data storage memory having a plurality of memory spaces respectively corresponding to a plurality of scanning areas, each memory space storing attribute data designating the cond

Abstract: An image-data scaling system in which a digital image data is subjected to a desired scale with respect to a main scanning direction to obtain a reduced or enlarged image data. The original image data is sequentially distributed to be sequentially stored into a plurality of memory means in synchronism with a data clock for the original image data. Image data stored in the plurality of memory means are parallelly read out on the basis of a read clock synchronized with the data clock and according to a desired scaling factor. The image data parallelly read out are partially or wholly extracted, or one or a plurality of interpolation image data are inserted between any selected adjacent image data, to thereby obtain an image data having the desired scaling factor.

Abstract: The present invention is directed to an image forming system comprising device for producing an image signal by scanning an original image, memory for storing the image signal, unit for receiving the image signal and reproducing an image on a material, and select for selecting a read address of the memory in a main scan direction and selecting a feed timing of the material in a sub-scan direction to form the image while shifting the original image to a desired position on the material.

Abstract: In an image processing apparatus capable of enlarging/reducing operation according to the invention, there are provided an input buffer for storing an image data, an enlargement/reduction circuit for performing the enlargement/reduction processing of the image data outputted from the input buffer, an output buffer for storing the enlarged/reduced image data, and a timing circuit for controlling processing timing for the image data through the input buffer, the enlargement/reduction circuit and the output buffer. The timing circuit respectively controls the data read-out timing from the input buffer and the data write-in timing into the output buffer in accordance with the designated enlargement/reduction ratio by regulating the frequency of clock pulse.

Abstract: A data processing apparatus is disclosed for electronically filing image data including large drawing data at a high speed. An operator sets up a registration mode in the filing apparatus, and enters a retrieval code for retrieving desired image data. These operations are effected by using related keys on a keyboard. A CPU in the filing apparatus carries out a predetermined check on the entered retrieval code, and stores the checked retrieval code in a main memory. A scanner picks up the image data to be retrieved. The image data is stored in a page memory and a display memory, and displayed by a CRT display device. The operator checks the image data if it has a large size, for example, A1 or A2. If it has a large size, he designates necessity of the size reduction of the image data by a keyboard. In response to this designation, the CPU reads out the image data of one page as stored in the page memory.

Abstract: The invented method scales a graphics image by recognizing under what resolution the image was created, identifying the resolution of the printer that will actually print the image, calculating a convenient virtual resolution, approximating, on a pixel-by-pixel basis, using the virtual resolution, how many new pixels are required to emulate each existing pixel and then storing the new pixels in memory or printing them.

Abstract: In an image forming apparatus a frame of image data is outputted in a divided manner, and plural images corresponding to the divided image data are recorded in order, respectively on plural recording materials. A manual instruction element is provided for instructing interruption of the image recording operation by the recording means and for re-starting the interrupted image recording operation. A controller controls the image recording operation of the recording means by interrupting the image recording operations in accordance with the interruption instruction and by re-starting the interrupted image recording operation in accordance with the re-start instruction.

Abstract: An image processing system is disclosed in which the various image processing circuits are arranged in a pipeline such that the output of each circuit is passed on to the next circuit in the pipeline without storing the data between circuits of the pipeline. The individual processing circuits are program-controlled by a common controller in order to properly synchronize various operations such as scanning, compressing, expanding, rescaling, windowing and rotating. The rescaling operation is carried out by executing a sequence of program instructions applying to single pixels, or to single lines of the image. These instructions include deletion, duplication and passing through of the image element. Windowing is provided by inserting start-of-window and end-of-window instructions in the appropriate places in the sequence of rescaling instructions.

Abstract: A digital copier using a laser card or like external storing medium for storing image data. A remaining amount of memory capacity of a laser card is displayed in terms of the number of papers of a particular size or by percent. Based on the remaining amount of capacity, image data are compressed and reduced, the reduction ratio being also recorded in the card. When the contents of a series of documents cannot be accommodated in a single card, the first card is provided with a mark which shows that the second card is to follow.

Abstract: In computer image generation (CIG) systems, image data for defining pixel modulation values and for supporting a display having a predetermined resolution are determined for defining a scene. For some applications, such as for representing background and/or peripheral areas, it may be acceptable to use data having a lower resolution than the predetermined resolution. Method and apparatus for taking a portion of the image data obtain derived data by a predetermined combination of the portion of image data. Lines of composed data supplied to a display device include a sequence of pixel modulation values selected from the portion of image data and the derived data. In one embodiment the number of lines supported by the image data is doubled with each line containing 50% image data and 50% derived data. Pixel modulation values may be oversampled between adjacent lines of the display for obtaining derived data.

Abstract: A copying apparatus has a carriage for placing an original document, a scanner for scanning the image of said original document placed on said carriage, a memory for storing said original image scanned by said scanning means in a state of a group of pixels,copy mode input device for instructing image conversion for forming a copy image on a copy material in a relationship faithful to or different from the image of the original document placed on said carriage, first control for controlling the pixel data readout from said memory means in response to the input signal from said mode input means for effecting image conversion,second control for controlling the readout function of said first control means, in case the image converted by said first control means overflows from the appropriate copying area, for producing said image in determined position of the copy material, and image forming device for forming the image on the determined position of the copy material in response to the readout data thus controlle

Abstract: An interpolator for enlarging or reducing a digital image includes an interpolation coefficient memory containing interpolation coefficients representing several different one dimensional interpolation kernels. A row interpolator receives image pixel values, retrieves interpolation coefficients from the memory, and produces interpolated pixel values by interpolating in a row direction. A column interpolator receives multiple rows of interpolated pixel values from the row interpolator, retrieves interpolation coefficients from the memory, and produces rows of interpolated pixel values by interpolating in a column direction. A logic and control unit monitors the content of the input data and switches between interpolation kernels to provide optimum interpolation for each type of content.

Abstract: An image processing system of the invention has a reader which reads out an image of an original, a page memory which stores image information of the original in the form of electric signals, a disk memory which stores part or all of the image information in the disk memory and also stores image processing information, an image processing section, a digitizer for the operator to input the image processing information, a CRT which displays input information or corrections in conversation language, a DMA controller, and a printer. The image processing system of the invention is capable of DMA transfer without the intermediacy of a CPU. Fewer addresses are required for readout of the image information from the memory, and high speed image processing is achieved.

Abstract: An apparatus for reproducing an image with a desired magnification other than that expressed in an integer comprises a key switch for inputting the desired magnification. When reproducing the image with the selected magnification, it is necessary to interpolate pixel dots by increasing or decreasing the number of pixel dots for each predetermined region. The pixel dots are output in accordance with interpolation tables.The image reproducing apparatus further comprises an interpolation table preparing device for preparing a plurality of interpolation tables having different positions for interpolating the pixel dots in each predetermined region in accordance with the desired magnification, and a switching device for switching among the plurality of interpolation tables at random for each scan line. Since the plurality of interpolation tables are switched for each scan line, no regular patterns appear on the reproduced images.

Abstract: A print control method and system for use with a printer which includes means for setting a printing magnification therefor and is capable of printing print data with the set magnification. In this method and system, print data of the same printing magnification as set in the other data which have a magnification or magnifications different from that set in the printer. After completion of printing of the print data of the same magnification, the printer is permitted to start printing with another magnification. According to necessity, time limit may be introduced in the preferential printing of the data of the same magnification. In this case, the set of the magnification in the printer may compulsively be changed after lapse of time limit to equalize the printing priority of the data.

Abstract: An image file consists of a file header, reduced-and-compressed image data, and compressed original image data. The reduced-and-compressed image data is obtained by compressing reduced image data expressing a reduced image of an original image in serial order of bit planes. The reduced image is then reproduced and displayed on an image display for an image search, in place of the original image itself, whereby efficiency in an image search is improved.

Abstract: Picture frames on a color photographic film are detected with a television camera, and the color images of the picture frames are displayed in a matrix arrangement on a color monitor. In order to display color images of picture frames at the same dimension on the color display irrespective of the picture frame size of the color photographic film, a specific area from which pixels are picked up is determined in accordance with the picture frame size, and pixel thinning is performed. Pixels for an image taken as a full size on the 135 type color photographic film are thinned by removing every second pixel in both the vertical and horizontal directions, and pixels for an image taken as a half size on the 135 type color photographic film are thinned by removing every second pixel in the vertical direction within the specific area, and interchanging the vertical and horizontal addresses to read the image data rotated by 90 degrees.

Abstract: A video processing system includes apparatus for panning and magnifying portions of a source image stored in memory. Viewer control circuitry generates center coordinates of the portion of the image to be displayed and also a magnification factor. Further circuitry, responsive to the center coordinates and the magnification factor, generates starting addresses for reading the appropriate portion of the source image from memory. The system monitors the relative values of the center coordinates and the magnification factor to preclude blanking intervals of the source image from being displayed.

Abstract: A method of processing original still picture data representing an original still image and stored in a video memory and storing processed still picture data representing a processed still image in a predetermined location of the video memory comprising the steps of setting an XY orthogonal coordinate system on the video memory, setting a reference line parallel to one of the X and Y axes of the orthogonal coordinate system and passing through a point of intersection of lines, each of which connects corresponding pixels of the original and processed still images, moving multiples the pixel data on a line of the original still image parallel to the reference line and furthest from the reference line to addresses of the video memory forming a line of the processed still image, and repeating the preceding step for pixel data on lines of the still image parallel to the reference line and second furthest from the reference line and succeeding lines, to thereby store the processed still picture data representing th

Abstract: An apparatus and method for displaying a digitized document such as a facsimile transmission signal on a low-resolution output device such as the screen of a personal computer. The compressed digital source signal is linearly reduced into an array of pixels by passing the source signal through a filter that groups source pels into clusters. The combined weight of the black or white source pels within each cluster is translated into a grey-scale value for the corresponding target pixel. The determination of the size of the filter domain, and the minimization of source pel duplication within the line are achieved through simple and rapid calculations. Any duplications or source pels resulting from incompatibility between the lengths of a line and the width of a filter domain are evenly distributed by stretching, when necessary, the source runs. The process is further expedited by direct transformation of stretched source runs into target pixels.

Abstract: A method of making a large size print from an original by dividing an image of an original into smaller divisions in the form of a matrix is provided. Video signals of the original image are read from divided memory areas of a memory, respectively. The information in each of the smaller divisions are enlarged by interpolating the video signals read out from each divided memory area. The interpolated video signals of each smaller division are displayed on an image display device such as CRT and projected onto a photographic paper for exposure, thereby making enlarged prints of the smaller divisions which in turn are arranged to form an enlarged picture of the original.

Abstract: In a method of reading an image by dividing it into plural areas and reading these divided areas in succession, continuity is given to the data of plural areas by conducting digitization in overlapping manner over the neighboring areas, in order to avoid formation of a streak at the boundary of the divided areas.

Abstract: An image processing apparatus of parallel processing type using DDA method, capable of processing fractional image data properly by a simple configuration. The apparatus includes DDA device for generating DDA bit patterns; device for calculating an extraction starting bit width and an extraction ending bit width; and device for performing contraction of the image data in accordance with the DDA bit patterns, the extraction starting bit width, and the extraction ending bit width.

Abstract: An image reading apparatus providing boundary shading correction includes reading circuitry for reading an image line by line and outputting image data, a first moving device for repeatedly moving the reading position of the reading circuitry in a main scanning direction a plurality of times, and a second moving device for moving the reading position of the reading circuitry in a subscanning direction every time the reading position of the reading circuitry is moved in the main scanning direction. Detection circuitry is provided for detecting a difference between image data outputted from the reading circuitry during a preceding movement of the reading position in the main scanning direction and image data outputted from the reading circuitry during a current movement of the reading position in the main scanning direction. Finally, correction circuitry is provided for correcting the image data outputted from the reading circuitry based on the difference detected by the detection circuitry.

Abstract: According to the prior art, the image data expanded in the image memory is read out for display of an expanded picture image so that not only an additional memory capacity has been required for the expanded display but also it takes a considerable time to expand. According to the invention, there is provided a control device for output a horizontal synchronizing signal once in a number of cycles. In response to this modified horizontal synchronizing signal, image data is read out of the image memory and allotted to a number of pixel positions for expanded display.

Abstract: An image processing apparatus having a plurality of parallel linear sensors, which may be sensors for different colors, in which output from one or more of the sensors may be subjected to an interpolation process to produce image data corresponding to the same scan line of an original as the image data being output from another of the sensors. This makes it possible to use the same driving signals for all the sensors even if they are staggered, and yet to produce output image data free of noise of the kind which can be caused by crosstalk. In one embodiment, compensation is made for a distance between two (or more) of the image sensors, based on magnification. In another embodiment, an interpolator is provided and interpolates an image signal of two adjacent lines of image from one image sensor, in accordance with magnification, to obtain an image signal on the same line as that from another of the image sensors.

Abstract: A scanner unit optically scans an original in a first direction to obtain an optical image. A mark is provided with a predetermined distance within a range in a second direction perpendicular to the first direction. The range is a range which can be scanned by the scanner unit. A line sensor is arranged in the second direction to read the optical image line by line in cooperation with the scanner unit. A converter converts a read output from the line sensor into digital data. An instruction section instructs to read the mark to the scanner unit and the line sensor prior to reading of the original. A distance calculating section calculates distance data corresponding to the predetermined distance of the mark in accordance with the digital data from the converter when the scanner unit and the line sensor cooperate to read the mark in accordance with an instruction from the instruction switch.

Abstract: An image reproduction apparatus capable of dividing the image of a designated area into plural areas and reproducing thus divided image on plural recording sheets, thereby allowing one to obtain a large copy when these sheets are pasted together.

Abstract: An image magnifying/reducing apparatus has an element or system for reading a document image to output it as an image signal, and a processor for magnifying/reducing the image signal output by the read. The processor includes an element or system for changing a magnification/reduction factor during the magnifying/reducing process of the image signal, and can make such a change in the factor for each line.

Abstract: When an original formed by using a dot screen is read, a key which corresponds to the screen line number of the dot screen is inputted. By the key input, a suitable magnification rate data based on the screen line number is set for eliminating moire patterns. An optical enlarging magnification rate and reducing magnification rate are determined based on the set magnification rate data. The image of the original is projected on an image sensor at this optical enlarging magnification rate and is converted into electrical data. The electrical data are reduced electrically at the reducing magnification rate to be outputted as the image data.

Abstract: Image reduction processing of a given original image is effected by determining the brightness of each picture element in a resultant reduced image in accordance with the numbers of black and white pixels in an intermediate matrix image obtained by quantizing the original image. When the black and white pixels in the quantized intermediate matrix image are equal, the aforesaid brightness is determined according to a prescribed criterion matrix pattern having a criterion point, thereby to obtain the reduced image on a display or the like with high fidelity to the original image.

Abstract: An image enlarging or contracting method comprises the steps of obtaining groups of interpolated image signal components along every array of original picture elements so that the interpolated picture elements corresponding to the interpolated image signal components of each group are deviated in position in a predetermined direction from the interpolated picture elements corresponding to the interpolated image signal components of every other group. A mean value of the values of the interpolated image signal components corresponding to a set of the interpolated picture elements, which belong to different groups of the interpolated image signal components and which correspond to one another, is calculated. The calculation of the mean value is repeated for every other set of the interpolated picture elements, thereby to ultimately obtain a group of the interpolated image signal components, which are to be used for image enlargement or contraction, along every array of the original picture elements.

Abstract: A facsimile machine provided with a page printer for printing image data on one or more cut sheets of recording medium. In the case where at least two differently sized cut sheets of recording medium are selectively used for recording of received image data, the facsimile machine includes a control system to keep the first selected size until recording of all of the image data of the same original document has been completed. In another embodiment, the amount of a single page of data and the size of cut sheet of recording medium in use are constantly monitored, and if the amount of a single page of data is equal to or less than half of the size of cut sheet of recording medium in use, then two pages of data are recorded on a single cut sheet of recording medium.

Abstract: Dither element values predetermined at all pixels of a dither matrix pattern prepared for an equality function are outputted one by one each time on n.times.n unit matrix of a read-out image obtained from a given original image by an image reading device such as an image scanner is subjected to extraction of brightness feature in 1/n image reducing mode. Thus, even a halftone image such as a photograph can be effectively reduced to scale an reproduced as a reduced image on a monitor display or the like.

Abstract: A process for reducing a picture by determining monochrome data of converted picture pixels according to logic calculations based on monochrome data of original picture pixels by using divisional regions of a picture area according to a reduction rate, for avoiding disappearance of fine lines from the converted picture.

Abstract: An original image including a line area and image areas separated from each other across the line area is subjected to a thinning process, whereby an iamge (10a) including a thinned line area (1a) and enlarged image areas (2a, 3a, 4a) is obtained. The enlarged image areas are sequentially expanded by a width of the thinned line area to form respective tint areas, and tint pattern data expressing respective shapes of the tint areas with prescribed colors are obtained.

Abstract: An apparatus for providing high-quality enlarged or reduced image by employing a simple circuit configuration which incorporates an interpolation method. For this purpose, the apparatus is so constituted that the interpolation data is provided to compensate for a gap of data between pixels in the entire image data, and that the interpolation data are produced from look-up tables based on interpolation data selection signals which are outputted in accordance with a designated scale ratio.

Abstract: An image processing apparatus includes input means for inputting data for a plurality of image areas, selection means for selecting desired ones of the image areas, and output means for outputting the selected image area under a predetermined condition.

Abstract: An image processing apparatus in which an image is read by division into plural areas. An image size variation for an area is conducted with the same image magnification as for a preceding area, so that the images of plural areas are smoothly connected.

Abstract: An image processing system has a line sensor for reading an image, a binarizing circuit for binarizing the read image data, a clock generator for generating a clock for transferring the image data, and a frequency changing circuit for changing the frequency of the clock from the clock generator using a decimal counter (e.g., a DRM) to allow image reproduction of any desired magnification factor without errors.

Abstract: An image reader comprising a variable magnification system for moving a lens disposed between an image of a document and an image sensor is disclosed. The focus adjustment is performed by moving the image sensor in a direction parallel to an optical axis of the lens. An initializing processing is finished without the focus adjustment in case the image formed on the image sensor is in the infocus condition when the power is supplied to the image reader and the magnification is the equal last magnification.

Abstract: An image recording apparatus with a variable magnification capability includes: a recording unit for recording an image by scanning a photosensitive material with a laser beam or the like; a circuit for generating an image recording signal for modulating the laser beam based on an image signal; an inputting unit for setting a desired magnification; and an adjusting circuit for adjusting the image recording signal based on the desired magnification. The adjusting circuit includes a circuit for setting the size of a standard image dot, and for changing the size, along the scanning direction of the beam, of a portion of the dots to obtain a desired degree of magnification/reduction of the image. The size of the standard dot is defined by a reference signal of a predetermined frequency. The size of the modified dots is defined by changing the frequency of the reference signal for the modified dots.