Method and apparatus of Bayer pattern direct video compression
AssigneeTaiwan Imagingtek Corporation
InventorsChih-Ta Star Sung, Eckehard Steinbach, Yin-Chun Blue Lan, Hu Chen, Mingzhe Sun
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Abstract
Applying a mechanism of image signal processing and color-space-conversion to convert the captured Green components to be Y, luminance components for only those pixels having raw Green data without interpolation, and to convert the Blue components to be U, chrominance components for only those pixels having raw Blue data, and Red components to be V, chrominance components for only those pixels having raw Red data. These converted YUV components are input to a predetermined video compression codec for reducing the intra- and inter-frame redundant information.
Claims14
A method of compressing the captured video images, comprising:
- applying a mechanism of image signal processing and color-space-conversion to convert the Green components to be Y, the luminance components only for those pixels capturing the raw Green data;
- applying a mechanism of image signal processing and color-space-conversion to convert the Blue components to be U, the chrominance components for only those pixels capturing the raw Blue data;
- applying a mechanism of image signal processing and color-space-conversion to convert the Red components to be V, the chrominance components for only those pixels capturing the raw Red data;
- and
- applying a predetermined video compression algorithm to compress the Y, U and V components which are generated from above image signal processing and color-space-conversion methods.
An apparatus of video capturing and video compression achieving low power consumption, comprising
- an image sensor capturing the light and digitizing the pixel data and a device executes the image signal processing;
- a circuit converting the raw Green, Red, and Blue color components to Y, V and U component with the Y components from Green pixels, the U components from the Blue pixels and the V components from the Red pixels;
- the first compression unite reducing the YUV components and saves into the temporary image buffer;
- a first decompression unite recovering the corresponding region of pixels of compressed YUV components;
- and
- a video compression device adopting the image of Y, U and V components and reducing the intra and inter frame redundancy and the data rate.
Dependencies are inferred from the claim text.