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    Method and Apparatus for Data Compression Using Error Plane Coding
    121.
    发明申请
    Method and Apparatus for Data Compression Using Error Plane Coding 有权
    使用误差平面编码的数据压缩的方法和装置

    公开(公告)号：US20140092986A1

    公开(公告)日：2014-04-03

    申请号：US13633182

    申请日：2012-10-02

    Applicant: MEDIATEK INC.

    Inventor： Han-Liang Chou ,  Tung-Hsing Wu ,  Kun-Bin Lee ,  Chi-Cheng Ju

    IPC: H04N7/26

    CPC classification number: H04N7/50 ,  H04N19/115 ,  H04N19/15 ,  H04N19/17 ,  H04N19/34 ,  H04N19/61

    Abstract: A method and apparatus of image data compression and decompression are disclosed. According to an embodiment of the present invention, the compression method partitions the image data into access units and encodes each access unit into a bitstream according to a target bit budget. Each access unit is encoded using first data compression to generate a first bitstream and the residual data is further encoded using second data compression to generate a second bitstream if the first bitstream is smaller than the target bit budget. In one example, the second data compression comprises bit plane coding applied to bit plane-ordered data, wherein the bit plane-ordered data is generated by scanning from a most significant bit to a least significant bit of the residual data in a bit plane-wise order. The decompression method comprises steps to recover reconstructed data from the first and second bitstreams.

    Abstract translation: 公开了一种图像数据压缩和解压缩的方法和装置。 根据本发明的实施例，压缩方法将图像数据划分为访问单元，并根据目标比特预算将每个访问单元编码为比特流。 使用第一数据压缩对每个访问单元进行编码以生成第一比特流，并且如果第一比特流小于目标比特预算，则使用第二数据压缩进一步编码残差数据以生成第二比特流。 在一个示例中，第二数据压缩包括应用于位平面有序数据的位平面编码，其中通过在位平面有序数据中从残留数据的最高有效位扫描到最低有效位来生成位平面有序数据， 明智的秩序。 解压缩方法包括从第一和第二比特流恢复重建数据的步骤。

    HDR Tone Mapping System and Method with Semantic Segmentation
    123.
    发明申请
    HDR Tone Mapping System and Method with Semantic Segmentation 有权

    公开(公告)号：US20250054119A1

    公开(公告)日：2025-02-13

    申请号：US18232805

    申请日：2023-08-10

    Applicant: MEDIATEK INC.

    Inventor： Huei-Han Jhuang ,  Jan-Wei Wang ,  Po-Yu Huang ,  Ying-Jui Chen ,  Chi-Cheng Ju

    IPC: G06T5/00

    Abstract: A HDR tone mapping system includes several modules. A semantic segmentation module is used to extract semantic information from the input image. An image decomposition module is used to decompose the input image to a high-bit base layer and a detail layer. A statistics module is used to generate statistics of pixels of the input image according to the semantic information. A curve computation module is used to generate a tone curve from the statistics. A compression module is used to compress the high-bit base layer to a low-bit base layer according to the tone curve, the statistics and the semantic information. A detail adjustment module is used to tune the detail layer according to the semantic information and the statistics to generate an adjusted detail layer. An image reconstruction module is used to combine the adjusted detail layer and the low-bit base layer to generate an output image.

    IMAGE SIGNAL AMPLIFYING CIRCUIT AND IMAGE SIGNAL AMPLIFYING METHOD
    126.
    发明公开
    IMAGE SIGNAL AMPLIFYING CIRCUIT AND IMAGE SIGNAL AMPLIFYING METHOD 审中-公开

    公开(公告)号：US20230300471A1

    公开(公告)日：2023-09-21

    申请号：US18118142

    申请日：2023-03-07

    Applicant: MEDIATEK INC.

    Inventor： Chi-Cheng Ju ,  Hsun-Chia Hsu ,  I-Hsien Lee

    IPC: H04N23/741 ,  H04N25/59 ,  G06T5/50

    CPC classification number: H04N23/741 ,  H04N25/59 ,  G06T5/50 ,  G06T2207/20221 ,  G06T2207/20208

    Abstract: An image signal amplifying circuit comprising an amplifier and a gain control circuit. The amplifier respectively amplifies a first image signal and a second image signal, which are generated by a pixel array of an image sensor, by a first analog gain and a second analog gain, wherein each one of pixel circuits of the pixel array comprises a first capacitor for generating the first image signal and a second capacitor for generating the second image signal, wherein a charge storage capacity of the first capacitor is smaller than a charge storage capacity of the second capacitor. The gain control circuit selectively adjusts the first analog gain or the second analog gain. Each one of the pixel circuits has a first conversion gain corresponding to the first capacitor and a second conversion gain corresponding to the second capacitor.

    High Sensitivity Color Image Generation Using Hybrid Sensor
    128.
    发明申请
    High Sensitivity Color Image Generation Using Hybrid Sensor 有权

    公开(公告)号：US20220303515A1

    公开(公告)日：2022-09-22

    申请号：US17691043

    申请日：2022-03-09

    Applicant: MediaTek Inc.

    Inventor： Yu-Ju Lin ,  Ying-Jui Chen ,  Keh-Tsong Li ,  Pin-Chung Lin ,  Hung-Chih Ko ,  Chi-Cheng Ju

    IPC: H04N9/64 ,  H04N9/04 ,  H04N5/30

    Abstract: Various schemes pertaining to generating a full-frame color image using a hybrid sensor are described. An apparatus receives sensor data from the hybrid sensor, wherein the sensor data includes partial-frame chromatic data of a plurality of chromatic channels and partial-frame color-insensitive data. The apparatus subsequently generates full-frame color-insensitive data based on the partial-frame color-insensitive data. The apparatus subsequently generates the full-frame color image based on the full-frame color-insensitive data and the partial-frame chromatic data. The apparatus provides benefits of enhancing image quality of the full-frame color image especially under low light conditions.

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