公开(公告)号：IL312943A

公开(公告)日：2024-07-01

申请号：IL31294324

申请日：2024-05-19

Applicant: APPLE INC ,  TOURAPIS ALEXANDROS ,  COTE GUY

Inventor： TOURAPIS ALEXANDROS ,  COTE GUY

IPC: H04N19/18

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.

公开(公告)号：AU2024200364A1

公开(公告)日：2024-02-08

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.

公开(公告)号：AU2021245204A1

公开(公告)日：2021-11-04

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.

公开(公告)号：AU2020202363B2

公开(公告)日：2021-04-01

申请号：AU2020202363

申请日：2020-04-03

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.

公开(公告)号：RU2709797C1

公开(公告)日：2019-12-20

申请号：RU2019118483

申请日：2019-06-14

Applicant: APPLE INC

Inventor： TOURAPIS ALEXANDROS ,  COTE GUY

IPC: H04N19/124 ,  H04N19/186

Abstract: Изобретениеотноситсяк кодированию/декодированиювидеосигналов. Техническийрезультат - расширениеарсеналатехническихсредствквантованияцветностидлясигнализациидополнительныхзначенийсдвигапараметраквантования (QP) цветности. Предложенспособсигнализациидополнительныхзначенийсдвига QP цветности, которыеявляютсяконкретнымидлягруппквантования, причемкаждаягруппаквантованияявнозадаетсвойсобственныйнаборзначенийсдвига QP цветности. Альтернативно, задаюттаблицувозможныхнаборовзначенийсдвига QP цветностив областизаголовкаизображения, икаждаягруппаквантованияиспользуетиндексдлявыборазаписиизтаблицы, дляопределениясвоегособственногонаборазначенийсдвига QP цветности. Конкретныезначениясдвига QP цветностигруппыквантованиязатемиспользуютдляопределениязначений QP цветностидляблоковв пределахгруппыквантования, дополнительнок значениямсдвига QP цветности, ужезаданнымдляболеевысокихуровнейиерархиикодированиявидеосигналов. 17 з.п. ф-лы, 22 ил.

公开(公告)号：BR112013005157A2

公开(公告)日：2016-04-26

申请号：BR112013005157

申请日：2011-08-25

Applicant: APPLE INC

Inventor： COTE GUY ,  FREDERIKSEN JEFFREY E ,  HUBEL PAUL MATTHEW ,  CHAWLA SUMIT

IPC: G06T7/40 ,  H04N9/73

Abstract: processamento de balanço automático de branco com seleção de espaço de cor flexível. trata-se de várias técnicas destinadas ao processamento de dados estatísticos em um processador de sinal de imagem (isp). em uma modalidade, um mecanismo de coleção de estatísticas pode ser configurado para adquirir estatísticas referentes ao auto-balanço de branco. o mecanismo de coleção de estatísticas pode receber dados rgb de bayer brutos adquiridos por um sensor de imagem e pode ser configurado para realizar uma ou mais conversões de espaço de cor de modo a obter dados de pixel em outros espaços de cor. um conjunto de filtro de pixel pode ser configurado para acumular somas dos dados de pixel condicionalmente com base na características yc1c2, conforme definido por uma condição de pixel por filtro de pixel. dependendo de um espaço de cor selecionado, os filtros de pixel podem gerar somas de cores, que podem ser usadas para corresponder um iluminante atual em relação a um conjunto de iluminantes de referência com os quais o sensor de imagem foi previamente calibrado.

公开(公告)号：AU2016200770A1

公开(公告)日：2016-02-25

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.

公开(公告)号：AU2011314275B2

公开(公告)日：2014-09-04

申请号：AU2011314275

申请日：2011-08-31

Applicant: APPLE INC

Inventor： COTE GUY ,  FREDERIKSEN JEFFREY E

IPC: H04N5/225 ,  H04N5/235

Abstract: Certain aspects of this disclosure relate to an image signal processing system 32 that includes a flash controller 550 that is configured to activate a flash device prior to the start of a target image frame by using a sensor timing signal. In one embodiment, the flash controller 550 receives a delayed sensor timing signal and determines a flash activation start time by using the delayed sensor timing signal to identify a time corresponding to the end of the previous frame, increasing that time by a vertical blanking time, and then subtracting a first offset to compensate for delay between the sensor timing signal and the delayed sensor timing signal. Then, the flash controller 550 subtracts a second offset to determine the flash activation time, thus ensuring that the flash is activated prior to receiving the first pixel of the target frame.

公开(公告)号：AU2010308353B2

公开(公告)日：2014-01-23

申请号：AU2010308353

申请日：2010-10-12

Applicant: APPLE INC

Inventor： COTE GUY ,  FREDERIKSEN JEFFREY E

IPC: H04N9/04 ,  G06T3/40

Abstract: Various techniques are provided herein for the demosaicing of images acquired and processed by an imaging system. The imaging system includes an image signal processor 32 and image sensors 30 utilizing color filter arrays (CFA) for acquiring red, green, and blue color data using one pixel array. In one embodiment, the CFA may include a Bayer pattern. During image signal processing, demosaicing may be applied to interpolate missing color samples from the raw image pattern. In one embodiment, interpolation for the green color channel may include employing edge-adaptive filters with weighted gradients of horizontal and vertical filtered values. The red and blue color channels may be interpolated using color difference samples with co-located interpolated values of the green color channel. In another embodiment, interpolation of the red and blue color channels may be performed using color ratios (e.g., versus color difference data).

公开(公告)号：MX2013002455A

公开(公告)日：2013-08-29

申请号：MX2013002455

申请日：2011-08-25

Applicant: APPLE INC

Inventor： FREDERIKSEN JEFFREY E ,  COTE GUY

IPC: H04N5/232

Abstract: Se proporcionan técnicas para determinar una posición focal óptima utilizando estadísticas de enfoque automático. En una modalidad, tales técnicas pueden incluir generar puntuaciones de enfoque automático y ordinario para determinar una longitud focal óptima en la cual posicionar un lente 88 asociado con el sensor de imagen 90. Por ejemplo, la lógica de estadísticas 680 puede determinar una posición ordinaria que indica un área de enfoque óptima que, en una modalidad, se puede determinar al buscar la primera posición ordinaria en la que una puntuación de enfoque automático ordinaria disminuye con respecto a una puntuación de enfoque automático ordinaria en una posición previa. Al utilizar esta posición como un punto de inicio para la búsqueda de puntuación fina, la posición focal óptima se puede determinar al buscar un pico en puntuaciones finas de enfoque automático. En otra modalidad, las estadísticas de enfoque automático también se pueden determinar con base en cada color del Bayer RGB, de tal forma que, aun en la presencia de aberraciones cromáticas, se pueden utilizar las puntuaciones relativas de enfoque automático por cada color para determinar la dirección de enfoque. cromáticas, se pueden utilizar las puntuaciones relativas de enfoque automático por cada color para determinar la dirección de enfoque.