公开(公告)号：US11991335B2

公开(公告)日：2024-05-21

申请号：US17409641

申请日：2021-08-23

申请人： KYOCERA Document Solutions, Inc.

发明人： Kenneth A. Schmidt

IPC分类号： H04N1/41 ,  G06T3/40 ,  G06T9/00

CPC分类号： H04N1/41 ,  G06T3/40 ,  G06T9/00

摘要： An example embodiment may involve obtaining an input pixel map of a digital image containing an array of a×b pixel macro-cells; classifying each of the a×b pixel macro-cells as P class cells for substantially lossless compression or Q class cells for lossy compression; creating a first intermediate pixel map representing: the P class cells as is, and the Q class cells with all zero values; creating a second intermediate pixel map representing: the P class cells with all zero values, and the Q class cells as is; encoding the first intermediate pixel map into a first output stream by using substantially lossless compression; and encoding the second intermediate pixel map into a second output stream by: downsampling the P class cells and the Q class cells therein, and serializing representations the downsampled cells.

公开(公告)号：US11743412B2

公开(公告)日：2023-08-29

申请号：US17186825

申请日：2021-02-26

申请人： Xerox Corporation

发明人： Jason Roy ,  John Guarrera ,  William David Notovitz ,  Michael John Wilsher

IPC分类号： H04N1/41 ,  H04N1/21 ,  H04N1/00 ,  H04N1/04

CPC分类号： H04N1/41 ,  H04N1/00087 ,  H04N1/04 ,  H04N1/21

摘要： A scanner calibration system is provided. The scanner calibration system includes memory configured in a format to store therein encoded gain and offset parameters. Such a configuration reduces the amount of required memory for the scanner calibration system without a compromise of performance.

公开(公告)号：US11736689B2

公开(公告)日：2023-08-22

申请号：US17457209

申请日：2021-12-01

申请人： NIPPON HOSO KYOKAI

发明人： Atsuro Ichigaya ,  Shunsuke Iwamura

IPC分类号： H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61 ,  H04N1/41 ,  H04N19/82 ,  H04N19/86 ,  H04N19/157 ,  H04N19/136

CPC分类号： H04N19/117 ,  H04N1/41 ,  H04N19/124 ,  H04N19/13 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

摘要： An encoding device 1 includes: a transformation unit 13 configured to calculate an orthogonal transform coefficient by performing an orthogonal transformation process on a residual image indicating a difference between the input image and a predicted image of the input image; a quantization unit 14 configured to generate a quantization coefficient by quantizing the orthogonal transform coefficient on the basis of a quantization parameter; an entropy encoding unit 24 configured to generate encoded data by encoding the quantization coefficient; an image decoding unit 10 configured to restore an orthogonal transform coefficient from the quantization coefficient on the basis of the quantization parameter and generate a reconstructed image by adding the predicted image to a residual image restored by performing inverse orthogonal transformation on the orthogonal transform coefficient; and a deblocking filtering unit 18 configured to perform a filtering process on the reconstructed image, wherein the deblocking filtering unit 18 controls a filtering strength depending on a luminance signal level of the reconstructed image and the quantization parameter.

公开(公告)号：US20230068158A1

公开(公告)日：2023-03-02

申请号：US17409641

申请日：2021-08-23

申请人： KYOCERA Document Solutions, Inc.

发明人： Kenneth A. Schmidt

IPC分类号： H04N1/41 ,  G06T9/00 ,  G06T3/40

摘要： An example embodiment may involve obtaining an input pixel map of a digital image containing an array of a×b pixel macro-cells; classifying each of the a×b pixel macro-cells as P class cells for substantially lossless compression or Q class cells for lossy compression; creating a first intermediate pixel map representing: the P class cells as is, and the Q class cells with all zero values; creating a second intermediate pixel map representing: the P class cells with all zero values, and the Q class cells as is; encoding the first intermediate pixel map into a first output stream by using substantially lossless compression; and encoding the second intermediate pixel map into a second output stream by: downsampling the P class cells and the Q class cells therein, and serializing representations the downsampled cells.

公开(公告)号：US20210306468A1

公开(公告)日：2021-09-30

申请号：US17215559

申请日：2021-03-29

申请人： SEIKO EPSON CORPORATION

发明人： Sota ISHIBASHI ,  Masaya KOBAYASHI

IPC分类号： H04N1/00 ,  H04N1/32 ,  H04N1/41

摘要： An image reading apparatus is configured to be connected to an external terminal via a network. The image reading apparatus includes a transmitter, a reading section, and a controller. The controller executes an image generation process of generating a single first image file from image data of a document read by the reading section and causes the transmitter to transfer the first image file to the external terminal connected via the network. The controller executes a compression rate determination process of determining a compression rate of a second image file in the image generation process based on a transfer rate of the network when the first image file is transferred to the external terminal and a reading rate of the reading section.

公开(公告)号：US11115667B1

公开(公告)日：2021-09-07

申请号：US16793791

申请日：2020-02-18

申请人： American Express Travel Related Services Company, Inc.

发明人： Hans-Jurgen Greiner ,  Vasif M. Pasha ,  Kevin H. Ringger

IPC分类号： H04N19/156 ,  H04N5/232 ,  H04N1/41 ,  H04W24/08 ,  H04W24/00

摘要： The system may capture an image comprising an original image size. The system may further determine an optimal size for the image based on a connection bandwidth and/or connection latency. The system may also compress the image to reduce an image size locally until the image size is less than or equal to the optimal size, before transmitting the image with the optimal size to the receiver while controlling latency in image transmission.

公开(公告)号：US10672148B2

公开(公告)日：2020-06-02

申请号：US15771414

申请日：2016-10-27

申请人： AGFA HEALTHCARE

发明人： Lukas Mroz

IPC分类号： H04N9/80 ,  G06T9/00 ,  H04N19/117 ,  H04N19/196 ,  H04N1/41 ,  H04N19/186 ,  H04N1/46 ,  G06T11/00 ,  G16H30/20

摘要： A digital encoding and decoding method of high bit-depth gray scale medical images allows standard 3-channel color image compression algorithms to be used to compress and de-compress such encoded high bit-depth gray scale images without significant image quality loss. The digital encoding and decoding method may be used to improve the network transmission, storage and rendering of such gray scale images in a standard web browser.

公开(公告)号：US10560608B2

公开(公告)日：2020-02-11

申请号：US15766090

申请日：2016-01-20

申请人： Jan Morovic ,  Peter Morovic ,  HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： Jan Morovic ,  Peter Morovic

IPC分类号： H04N1/41 ,  H04N1/60 ,  G06T1/20 ,  B33Y50/00 ,  G06F3/12 ,  H04N1/40

摘要： A method of processing data in a multi-stage imaging pipeline, the method comprising, at each stage of the multi-stage imaging pipeline, identifying a plurality of encoding values represented in received input data in a given encoding space for the respective pipeline stage, the identified plurality of encoding values comprising a subset of encoded values which are capable of being represented in the given encoding space, generating a list of encoding indices corresponding to the identified plurality of encoded values in the given encoding space, representing the encodings of one or more entities of the received input data using the generated list of encoding indices, and outputting the represented encodings of the one or more entities to the next stage of the multi-stage imaging pipeline.

公开(公告)号：US10531104B2

公开(公告)日：2020-01-07

申请号：US16288613

申请日：2019-02-28

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Satoshi Sato ,  Kunio Nobori ,  Takeo Azuma ,  Ayako Maruyama ,  Nobuhiko Wakai

IPC分类号： H04N19/186 ,  G06T3/40 ,  H04N9/04 ,  H04N1/41 ,  H04N1/64

摘要： An imaging apparatus includes an imaging optical system that forms an optical signal, an imaging device that includes a plurality of pixels and that converts the optical signal formed on the plurality of pixels into an electrical signal, a color filter that is arranged between the imaging optical system and the imaging device and that has a different optical transmittance for each of the plurality of pixels and each of a plurality of wavelength ranges, and a transmission data compression circuit that compresses the electrical signal obtained by the imaging device. The sum of products of an optical transmittance group relating to a plurality of optical transmittances of the color filter for each of the plurality of pixels in the plurality of wavelength ranges and coefficients common to the plurality of pixels is the same between the plurality of pixels.

公开(公告)号：US10341533B2

公开(公告)日：2019-07-02

申请号：US16188421

申请日：2018-11-13

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. ,  PURDUE RESEARCH FOUNDATION

发明人： Zhenhua Hu ,  Chuohao Tang ,  Terry M. Nelson ,  Mark Q. Shaw ,  Jan P. Allebach ,  Amy Ruth Reibman

IPC分类号： H04N1/60 ,  H04N1/41 ,  H04N1/00 ,  B41J2/175

摘要： In some examples, a print cartridge component includes a memory device comprising coefficients based on a compression of a difference table including a plurality of difference nodes in which each difference node represents a value that is a difference of a value of a node of a color table and a value of a corresponding node of a reference table, the coefficients useable to produce a reconstructed difference table, and residue information representing a difference of the color table and the reconstructed difference table.