DYNAMICALLY DETERMINING FILTERING STRENGTH FOR NOISE FILTERING IN IMAGE PROCESSING

摘要

An image processing pipeline may dynamically determine filtering strengths for noise filtering of image data. Statistics may be collected for an image at an image processing pipeline. The statistics may be accessed and evaluated to generate a filter strength model that maps respective filtering strengths to different portions of the image. A noise filter may determine a filtering strength for image data received at the noise filter according to the filter strength model. The noise filter may then apply a filtering technique according to the determined filtering strength.

主权项

1. An apparatus, comprising:
a memory; an image signal processor that comprises:
a noise statistics collection unit; anda noise filter; and the image signal processor, configured to:
generate, by the noise statistics collection unit, a plurality of noise statistics for an image;store, by the noise statistics collection unit, the plurality of noise statistics to the memory;receive, at the noise filter, image data for the image;access a filter strength model stored in the memory that maps respective filtering strengths to different portions of the image to determine a filter strength for the image data, wherein the filter strength model is generated based on the plurality of noise statistics for the image; andapply, by the noise filter, a filtering technique to the image data according to the determined filter strength.