Invention Application
- Patent Title: IMAGE COMPRESSION METHOD AND APPARATUS
- Patent Title (中): 图像压缩方法和装置
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Application No.: US15165517Application Date: 2016-05-26
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Publication No.: US20160277746A1Publication Date: 2016-09-22
- Inventor: Jiali Fu , Jiantong Zhou , Sixin Lin
- Applicant: Huawei Technologies Co., Ltd.
- Priority: CN201310631742.X 20131129
- Main IPC: H04N19/154
- IPC: H04N19/154 ; H04N19/18 ; H04N19/124

Abstract:
The present invention relates to an image compression method and apparatus, where the image compression method includes a step of performing amplitude decreasing processing on a frequency domain coefficient or a quantization coefficient of a to-be-processed image. The image compression method includes: determining a texture direction of the to-be-processed image; and performing amplitude decreasing processing on the frequency domain coefficient or the quantization coefficient of the to-be-processed image according to the texture direction, where the frequency domain coefficient is a coefficient obtained after the image is transformed, and the quantization coefficient is a coefficient obtained after the frequency domain coefficient is quantized. According to embodiments of the present invention, amplitude decreasing processing is performed on a frequency domain coefficient of a to-be-processed image according to a texture direction of the to-be-processed image, which can improve the compression efficiency without affecting subjective quality of the to-be-processed image.
Public/Granted literature
- US09888245B2 Image compression method and apparatus for performing amplitude decreasing processing Public/Granted day:2018-02-06
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