公开(公告)号：WO2015147987A1

公开(公告)日：2015-10-01

申请号：PCT/US2015/014006

申请日：2015-01-31

Applicant: GOPRO, INC.

Inventor： CHAWLA, Sumit ,  EDWARDS, Elizabeth, T. ,  CHEN, Ying

IPC: H04N9/68

CPC classification number: H04N9/643 ,  H04N1/6033 ,  H04N9/68

Abstract: The conversion of RAW data captured by a camera can have artifacts in smoothness of various hues for varying chroma. To optimize smoothness and color accuracy, transform coefficients defining conversion of a standard color model to a target color model are determined. The RAW data is converted to data in a standard color model and the data in the standard color model is converted to data in the target color model using the transform coefficients. The process is repeated for various lightness levels and combined into a look up table to efficiently convert RAW data to data in the target color model for various lightness levels.

Abstract translation: 由相机拍摄的RAW数据的转换可以具有用于变化色度的各种色调的平滑度的伪影。 为了优化平滑度和颜色精度，确定将标准颜色模型的转换定义为目标颜色模型的变换系数。 将RAW数据转换为标准颜色模型中的数据，并使用变换系数将标准颜色模型中的数据转换为目标颜色模型中的数据。 对于各种亮度级别重复该过程并组合成查找表以有效地将RAW数据转换为目标颜色模型中的数据，以获得各种亮度级别。

公开(公告)号：WO2015061007A1

公开(公告)日：2015-04-30

申请号：PCT/US2014/058467

申请日：2014-09-30

Applicant: GOPRO, INC.

Inventor： MOBBS, Paul ,  CAMPBELL, Scott, Patrick ,  NEWMAN, David, A. ,  RANGAM, Kasturi ,  CHAWLA, Sumit

IPC: H04N5/357

CPC classification number: H04N5/2329 ,  H04N1/2137 ,  H04N1/215 ,  H04N5/23229 ,  H04N5/23232 ,  H04N5/23277 ,  H04N5/3532 ,  H04N5/35572 ,  H04N2101/00

Abstract: An image sensor of a camera system captures an image over an image capture interval of time, and waits a blanking interval of time before capturing an additional image. The captured image is provided to a frame controller, and is buffered until an image signal processor accesses the captured image. The image signal processor processes the accessed image over an image processing interval of time, producing a processed image. The image processing interval of time is selected to be greater than the image capture interval of time, but less than the sum of the image capture interval of time and the blanking interval of time. By reducing the image capture interval of time but maintaining an image processing interval of time, rolling shutter artifacts are beneficially reduced without increasing the processing resources or power required by the image signal processor to process the image.

Abstract translation: 相机系统的图像传感器通过图像捕获时间间隔拍摄图像，并且在捕获附加图像之前等待消隐间隔时间。 将捕获的图像提供给帧控制器，并且被缓冲直到图像信号处理器访问所捕获的图像。 图像信号处理器在图像处理间隔处理所访问的图像，产生经处理的图像。 图像处理时间间隔选择为大于图像捕获时间间隔，但小于图像捕获间隔时间和消隐间隔时间之和。 通过减小图像捕获时间间隔，但是保持图像处理时间间隔，有利地减少滚动快门伪影，而不增加图像信号处理器处理图像所需的处理资源或功率。

公开(公告)号：WO2015050774A1

公开(公告)日：2015-04-09

申请号：PCT/US2014/057535

申请日：2014-09-25

Applicant: GOPRO, INC.

Inventor： CAMPBELL, Scott, Patrick ,  MOBBS, Paul ,  ADSUMILLI, Balineedu, Chowdary ,  CHAWLA, Sumit

IPC: H04N19/85

CPC classification number: G06T1/20 ,  G06T3/4015 ,  H04N1/6019 ,  H04N1/6027 ,  H04N5/232 ,  H04N5/23212 ,  H04N5/23216 ,  H04N5/23222 ,  H04N5/23229 ,  H04N5/23241 ,  H04N5/23245 ,  H04N5/23254 ,  H04N5/23267 ,  H04N5/23296 ,  H04N5/2353 ,  H04N5/247 ,  H04N5/374 ,  H04N5/378 ,  H04N9/045 ,  H04N9/09 ,  H04N9/735 ,  H04N9/8042 ,  H04N19/102 ,  H04N19/12 ,  H04N19/132 ,  H04N19/156 ,  H04N19/164 ,  H04N19/172 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/33 ,  H04N19/42 ,  H04N19/423 ,  H04N19/44 ,  H04N19/517 ,  H04N19/63 ,  H04N19/91

Abstract: An image capture accelerator performs accelerated processing of image data. In one embodiment, the image capture accelerator includes accelerator circuitry including a pre-processing engine and a compression engine. The pre-processing engine is configured to perform accelerated processing on received image data, and the compression engine is configured to compress processed image data received from the pre-processing engine. In one embodiment, the image capture accelerator further includes a demultiplexer configured to receive image data captured by an image sensor array implemented within, for example, an image sensor chip. The demultiplexer may output the received image data to an image signal processor when the image data is captured by the image sensor array in a standard capture mode, and may output the received image data to the accelerator circuitry when the image data is captured by the image sensor array in an accelerated capture mode.

Abstract translation: 图像捕获加速器执行图像数据的加速处理。 在一个实施例中，图像捕获加速器包括包括预处理引擎和压缩引擎的加速器电路。 预处理引擎被配置为对接收的图像数据执行加速处理，并且压缩引擎被配置为压缩从预处理引擎接收的经处理的图像数据。 在一个实施例中，图像捕获加速器还包括解复用器，其被配置为接收由例如图像传感器芯片内实现的图像传感器阵列捕获的图像数据。 当图像数据以标准捕捉模式被图像传感器阵列捕获时，解复用器可以将接收的图像数据输出到图像信号处理器，并且当图像数据被图像捕获时，可以将接收到的图像数据输出到加速器电路 传感器阵列处于加速捕获模式。

公开(公告)号：WO2015026864A1

公开(公告)日：2015-02-26

申请号：PCT/US2014/051750

申请日：2014-08-19

Applicant: GOPRO, INC.

Inventor： WOODMAN, Nicholas, D. ,  CHAWLA, Sumit ,  SEGAPELLI, Loic ,  CAMPBELL, Scott, Patrick

IPC: H04N5/232

CPC classification number: H04N5/2628 ,  G06T3/0093 ,  G06T3/20 ,  G06T3/40 ,  G06T3/4069 ,  G06T3/4084 ,  G09G5/005 ,  G09G2340/0442 ,  H04N5/23229 ,  H04N7/0122 ,  H04N21/234372 ,  H04N21/440272

Abstract: A camera system captures an image in a source aspect ratio and applies a transformation to the input image to scale and warp the image to generate an output image having a target aspect ratio different than the source aspect ratio. The output image has the same field of view as the input image, maintains image resolution, and limits distortion to levels that do not substantially affect the viewing experience. In one embodiment, the output image is non-linearly warped relative to the input image such that a distortion in the output image relative to the input image is greater in a corner region of the output image than a center region of the output image.

Abstract translation: 相机系统以源宽高比捕获图像，并且对输入图像应用变换以缩放和扭曲图像以生成具有不同于源宽高比的目标纵横比的输出图像。 输出图像与输入图像具有相同的视野，保持图像分辨率，并将失真限制到不会对观看体验产生实质影响的水平。 在一个实施例中，输出图像相对于输入图像非线性翘曲，使得输出图像中相对于输入图像的失真在输出图像的拐角区域中大于输出图像的中心区域。