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    System and method for processing image data using an image signal processor having back-end processing logic
    11.
    发明专利
    System and method for processing image data using an image signal processor having back-end processing logic 未知

    公开(公告)号：AU2011312756B2

    公开(公告)日：2015-06-04

    申请号：AU2011312756

    申请日：2011-08-31

    Applicant: APPLE INC

    Inventor： COTE GUY ,  FREDERIKSEN JEFFREY E

    IPC: H04N9/73 ,  G06K9/00

    Abstract: Disclosed embodiments provide for a an image signal processing system 32 that includes back-end pixel processing unit 120 that receives pixel data after being processed by at least one of a front-end pixel processing unit 80 and a pixel processing pipeline 82. In certain embodiments, the back-end processing unit 120 receives luma/chroma image data and may be configured to apply face detection operations, local tone mapping, bright, contrast, color adjustments, as well as scaling. Further, the back-end processing unit 120 may also include a back-end statistics unit 2208 that may collect frequency statistics. The frequency statistics may be provided to an encoder 118 and may be used to determine quantization parameters that are to be applied to an image frame.

    SISTEMA Y METODO PARA PROCESAR DATOS DE IMAGEN UTILIZANDO UN PROCESADOR DE SEÑAL DE IMAGEN CON LOGICA DE PROCESAMIENTO DE ETAPA FINAL.
    12.
    发明专利
    SISTEMA Y METODO PARA PROCESAR DATOS DE IMAGEN UTILIZANDO UN PROCESADOR DE SEÑAL DE IMAGEN CON LOGICA DE PROCESAMIENTO DE ETAPA FINAL. 未知

    公开(公告)号：MX2013003446A

    公开(公告)日：2013-09-13

    申请号：MX2013003446

    申请日：2011-08-31

    Applicant: APPLE INC

    Inventor： FREDERIKSEN JEFFREY E ,  COTE GUY

    IPC: H04N9/73 ,  G06K9/00

    Abstract: Las modalidades divulgadas proporcionan un sistema de procesamiento de señal de imagen 32 que incluye una unidad e procesamiento de píxel de etapa final 120 que recibe datos de píxel después de ser procesados por al menos una de una unidad de procesamiento de píxel de etapa inicial 80 y un conducto de procesamiento de píxeles 82; en algunas modalidades, la unidad de procesamiento de etapa final 120 recibe datos de imagen de luminancia/crominancia y se puede configurar para aplicar operaciones de detección de rostros, mapeo de tono local, ajustes de brillantez, contraste, color, así como escala; además, la unidad de procesamiento de etapa final 120 también puede incluir una unidad de estadísticas de etapa final 2208 que puede recopilar estadísticas de frecuencia; las estadísticas de frecuencia pueden ser proporcionadas a un codificador 118 y pueden ser utilizadas para determinar parámetros de cuantificación que van a ser aplicados a un cuadro de imagen.

    Dual image sensor image processing system and method
    13.
    发明专利
    Dual image sensor image processing system and method 未知

    公开(公告)号：AU2011292290A1

    公开(公告)日：2013-03-07

    申请号：AU2011292290

    申请日：2011-08-11

    Applicant: APPLE INC

    Inventor： COTE GUY ,  FREDERIKSEN JEFFREY E ,  BRATT JOSEPH P ,  GO SHUN WAI ,  MILLET TIMOTHY J

    IPC: H04N5/232

    Abstract: Various techniques are provided for processing image data acquired using a digital image sensor 90. In accordance with aspects of the present disclosure, one such technique may relate to the processing of image data in a system 10 that supports multiple image sensors 90. In one embodiment, the image processing system 32 may include control circuitry configured to determine whether a device is operating in a single sensor mode (one active sensor) or a dual sensor mode (two active sensors). When operating in the single sensor mode, data may be provided directly to a front-end pixel processing unit 80 from the sensor interface of the active sensor. When operating in a dual sensor mode, the image frames from the first and second sensors 90a, 90b are provided to the front-end pixel processing unit 80 in an interleaved manner. For instance, in one embodiment, the image frames from the first and second sensors 90a, 90b are written to a memory 108, and then read out to the front-end pixel processing unit 80 in an interleaved manner.

    Temporal filtering techniques for image signal processing
    14.
    发明专利
    Temporal filtering techniques for image signal processing 未知

    公开(公告)号：AU2010308351A1

    公开(公告)日：2012-05-17

    申请号：AU2010308351

    申请日：2010-10-12

    Applicant: APPLE INC

    Inventor： COTE GUY ,  FREDERIKSEN JEFFREY E

    IPC: G06T5/50 ,  H04N5/14 ,  H04N5/232 ,  H04N9/04

    Abstract: Various techniques for temporally filtering raw image data acquired by an image sensor are provided. In one embodiment, a temporal filter determines a spatial location of a current pixel and identifies at least one collocated reference pixel from a previous frame. A motion delta value is determined based at least partially upon the current pixel and its collocated reference pixel. Next, an index is determined based upon the motion delta value and a motion history value corresponding to the spatial location of the current pixel, but from the previous frame. Using the index, a first filtering coefficient may be selected from a motion table. After selecting the first filtering coefficient, an attenuation factor may be selected from a luma table based upon the value of the current pixel, and a second filtering coefficient may subsequently be determined based upon the selected attenuation factor and the first filtering coefficient. The temporally filtered output value corresponding to the current pixel may then be calculated based upon the second filtering coefficient, the current pixel, and the collocated reference pixel.

    Chroma quantization in video coding
    15.
    发明专利
    Chroma quantization in video coding 未知

    公开(公告)号：AU2024200364B2

    公开(公告)日：2025-01-30

    申请号：AU2024200364

    申请日：2024-01-19

    Applicant: APPLE INC

    Inventor： TOURAPIS ALEXANDROS ,  COTE GUY

    IPC: H04N19/124

    Abstract: A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

    Chroma quantization in video coding
    19.
    发明专利
    Chroma quantization in video coding 未知

    公开(公告)号：AU2021245204B2

    公开(公告)日：2023-02-02

    申请号：AU2021245204

    申请日：2021-10-08

    Applicant: APPLE INC

    Inventor： TOURAPIS ALEXANDROS ,  COTE GUY

    IPC: H04N19/124

    Abstract: A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

    Chroma quantization in video coding
    20.
    发明专利
    Chroma quantization in video coding 未知

    公开(公告)号：AU2016200770B2

    公开(公告)日：2018-03-01

    申请号：AU2016200770

    申请日：2016-02-05

    Applicant: APPLE INC

    Inventor： TOURAPIS ALEXANDROS ,  COTE GUY

    IPC: H04N19/124

    Abstract: A method of signaling additional chroma QP offset values that are specific to quantization groups is provided, in which each quantization group explicitly specifies its own set of chroma QP offset values. Alternatively, a table of possible sets of chroma QP offset values is specified in the header area of the picture, and each quantization group uses an index to select an entry from the table for determining its own set of chroma QP offset values. The quantization group specific chroma QP offset values are then used to determine the chroma QP values for blocks within the quantization group in addition to chroma QP offset values already specified for higher levels of the video coding hierarchy.

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