Patent ID: 11908111
Assignee: GOPRO, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An image processor for image analysis and processing comprising:
a sensor readout component configured to receive Bayer format image data corresponding to an input image;
a Bayer-to-Bayer component;
a Bayer-to-RGB component configured to obtain RGB format image data based on the Bayer format image data;
an RGB-to-YUV component configured to obtain YUV format image data based on the RGB format image data, wherein to obtain the YUV format image data, the RGB-to-YUV component is configured to:
divide the image into a plurality of non-overlapping tiles having a defined width and a defined height;
obtain a histogram for a respective tile from the plurality of non-overlapping tiles, wherein the RGB-to-YUV component is configured to obtain the histogram using a weight map that weights respective regions of interest in the image prior to statistics aggregation;
obtain a gain table for the respective tile; and
obtain a gain value for a portion of the respective tile by bilinear interpolation relative to the center of the respective tile; and

a noise reduction component configured to obtain noise reduced image data based on the YUV format image data;
wherein the image processor is configured to output processed image data based on the noise reduced image data.