公开(公告)号：US11800075B2

公开(公告)日：2023-10-24

申请号：US17193751

申请日：2021-03-05

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Feng-Shih Su

IPC: H04N11/20 ,  H04N9/64 ,  H04N1/64 ,  G09G5/00 ,  G09G5/02 ,  G09G5/04

CPC classification number: H04N9/642 ,  G09G5/005 ,  G09G5/006 ,  G09G5/02 ,  G09G5/04 ,  H04N1/648 ,  H04N9/643

Abstract: An asymmetric image transmission method and an electronic device thereof are provided. The asymmetric image transmission method is applicable to transmission of an image signal from a transmitter to a receiver and includes: modifying, by the transmitter, a first image pixel length in the image signal that conforms to a four-byte mode to a second image pixel length of a three-byte mode; transmitting a plurality of image pixels of the second image pixel length in the three-byte mode respectively through three transmission lanes of a transmission interface; and modifying, by the receiver, the second image pixel length of the image pixels to the first image pixel length of the four-byte mode to obtain the image signal.

公开(公告)号：US11711527B2

公开(公告)日：2023-07-25

申请号：US17404452

申请日：2021-08-17

Applicant: Apple Inc.

Inventor： Alexandros Tourapis ,  Yeping Su ,  David W. Singer ,  Hsi-Jung Wu

IPC: H04N19/186 ,  H04N19/189 ,  H04N9/64 ,  H04N11/20 ,  H04N19/70 ,  H04N19/46 ,  H04N19/117 ,  H04N19/132 ,  H04N19/154 ,  H04N19/59 ,  H04N9/67 ,  H04N19/82 ,  H04N19/147 ,  H04N19/80 ,  H04N19/85 ,  H04N19/44

CPC classification number: H04N19/186 ,  H04N9/64 ,  H04N9/67 ,  H04N11/20 ,  H04N19/117 ,  H04N19/132 ,  H04N19/147 ,  H04N19/154 ,  H04N19/189 ,  H04N19/44 ,  H04N19/46 ,  H04N19/59 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/85

Abstract: A method of adaptive chroma downsampling is presented. The method comprises converting a source image to a converted image in an output color format, applying a plurality of downsample filters to the converted image and estimating a distortion for each filter chose the filter that produces the minimum distortion. The distortion estimation includes applying an upsample filter, and a pixel is output based on the chosen filter. Methods for closed loop conversions are also presented.

公开(公告)号：US11412190B2

公开(公告)日：2022-08-09

申请号：US16983844

申请日：2020-08-03

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Chen-Wei Lu ,  Yin Qian ,  Eiichi Funatsu ,  Jin Li

IPC: H04N9/083 ,  H04N9/04 ,  H04N11/20

Abstract: An image sensor includes a photodiode array and a color filter array optically aligned with the photodiode array. The photodiode array includes a plurality of photodiodes disposed within respective portions of a semiconductor material. The color filter array includes a plurality of color filters arranged to form a plurality of tiled minimal repeating units. Each minimal repeating unit includes at least a first color filter with a red spectral photoresponse, a second color filter with a yellow spectral photoresponse, and a third color filter with a panchromatic spectral photoresponse.

公开(公告)号：US11240564B2

公开(公告)日：2022-02-01

申请号：US16478921

申请日：2017-03-24

Applicant: SHENZHEN KANDAO TECHNOLOGY CO., LTD.

Inventor： Dan Chen ,  Zhijing Shao ,  Dongfeng Xing

IPC: H04N7/01 ,  H04N11/20 ,  H04N21/4725 ,  H04N5/232 ,  H04N21/431 ,  G03B37/00

Abstract: Provided is a method for playing a panoramic picture, the method comprising: acquiring a corresponding non-planar panoramic picture according to a picture acquisition instruction; acquiring picture content from the non-planar panoramic picture, and determining a main presentation axis and a presentation centre of the picture content; creating a cylindrical projection plane by using the main presentation axis and the presentation centre, wherein a cylinder extension direction of the cylindrical projection plane is substantially perpendicular to the main presentation axis, and the centre of the cylindrical projection plane essentially overlaps the presentation centre; converting the non-planar panoramic picture into a cylindrical panoramic picture with the cylindrical projection plane; and executing a playing operation on the cylindrical panoramic picture by using a planar display apparatus.

公开(公告)号：US11019321B2

公开(公告)日：2021-05-25

申请号：US16535817

申请日：2019-08-08

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pierre Andrivon ,  Philippe Bordes ,  Emmanuel Jolly

IPC: H04N11/20 ,  H04N11/24 ,  H04N19/70 ,  H04N19/46 ,  H04N19/186

Abstract: A method for encoding a colour transform is disclosed that comprises encoding first parameters representative of video signal characteristics of colour output decoded pictures remapped by said at least one color transform; and encoding second parameters representative of said at least one colour transform.

公开(公告)号：US10659749B2

公开(公告)日：2020-05-19

申请号：US16312251

申请日：2017-06-28

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Harshad Kadu ,  Guan-Ming Su

IPC: H04N11/20 ,  H04N19/186 ,  H04N19/182 ,  G06T5/40 ,  H04N19/117 ,  H04N19/154 ,  G06T5/00 ,  H04N19/126 ,  H04N9/64 ,  H04N9/67

Abstract: In a method to reconstruct a high dynamic range video signal, a decoder receives parameters in the input bitstream to generate a prediction function. Using the prediction function, it generates a first set of nodes for a first prediction lookup table, wherein each node is characterized by an input node value and an output node value. Then, it modifies the output node values of one or more of the first set of nodes to generate a second set of nodes for a second prediction lookup table, and generates output prediction values using the second lookup table. Low-complexity methods to modify the output node value of a current node in the first set of nodes based on computing modified slopes between the current node and nodes surrounds the current node are presented.

公开(公告)号：US20190356891A1

公开(公告)日：2019-11-21

申请号：US16370608

申请日：2019-03-29

Applicant: Synaptics Incorporated

Inventor： Chang Q. ZHANG ,  Jun ZHANG ,  Chandranath MANCHI ,  Yicai YING

IPC: H04N9/73 ,  H04N7/01 ,  H04N11/20

Abstract: A method and apparatus for image processing. A data conversion and color-space mapping (DCM) circuit includes an inverse opto-electrical transfer function (IOETF), a color-space converter, and a color-space re-mapper. The IOETF receives image data for one or more frames acquired by an image capture device and transfers the image data from a non-linear domain to a linear domain. The color-space converter converts the linear image data from a first color space to a second color space, where each of the first and second color spaces is based on a gamut of the image capture device. The color-space re-mapper processes the image data to be rendered on a display device by remapping the converted image data from the second color space to a third color space, where the third color space is based on a gamut of the display device.

公开(公告)号：US10440343B2

公开(公告)日：2019-10-08

申请号：US16010786

申请日：2018-06-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kaori Tajima

IPC: H04N11/20 ,  H04N9/64 ,  H04N9/78 ,  H04N9/68

Abstract: An image processing apparatus includes a separation unit that separates a high-frequency component and a low-frequency component, a first generation unit that generates a color signal component from the low-frequency component, a second generation unit that generates a color signal component from the low-frequency component, a third generation unit that generates a color signal component used in common for a luminance signal and a chrominance signal, a first tone conversion unit that performs first tone conversion processing on an output of the third generation unit, a color-and-luminance separation unit that generates a luminance signal and a chrominance signal, a second tone conversion unit that performs a second tone conversion on the high-frequency component, and a combining unit that combines outputs of the color-and-luminance separation unit and the second tone conversion unit.

公开(公告)号：US10349064B2

公开(公告)日：2019-07-09

申请号：US15066992

申请日：2016-03-10

Applicant: Apple Inc.

Inventor： Alexandros Michael Tourapis ,  Yeping Su ,  David William Singer ,  Hsi-Jung Wu

IPC: H04N19/186 ,  H04N19/189 ,  H04N9/64 ,  H04N11/20 ,  H04N19/70 ,  H04N19/147 ,  H04N19/46 ,  H04N19/117 ,  H04N19/132 ,  H04N19/154 ,  H04N19/80 ,  H04N19/85 ,  H04N19/59 ,  H04N19/44 ,  H04N9/67

Abstract: A method of adaptive chroma downsampling is presented. The method comprises converting a source image to a converted image in an output color format, applying a plurality of downsample filters to the converted image and estimating a distortion for each filter chose the filter that produces the minimum distortion. The distortion estimation includes applying an upsample filter, and a pixel is output based on the chosen filter. Methods for closed loop conversions are also presented.

公开(公告)号：US10291881B2

公开(公告)日：2019-05-14

申请号：US15367227

申请日：2016-12-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tadamasa Toma ,  Kengo Terada ,  Masayuki Kozuka ,  Takahiro Nishi

IPC: H04N7/01 ,  G09G5/10 ,  H04N5/20 ,  H04N7/015 ,  H04N9/64 ,  H04N21/462 ,  G06F3/14 ,  H04N11/20 ,  H04N5/235 ,  H04N5/243 ,  G06T5/00 ,  G09G5/02

Abstract: A conversion method for converting luminance of a video, including a luminance value in a first luminance range, to be displayed on a display apparatus includes: acquiring a first luminance signal indicating a code value obtained by quantization of the luminance value of the video; and converting the code value indicated by the acquired first luminance signal into a second luminance value determined based on a luminance range of the display apparatus, the second luminance value being compatible with a second luminance range with a maximum value smaller than a maximum value of the first luminance range and larger than 100 nit. This provides the conversion method capable of achieving further improvement.