GEOMETRIC TRANSFORMATIONS FOR IMAGE COMPRESSION
DE602019074821T2Active Publication Date: 2025-08-27GOOGLE LLC
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Patent Information
- Application Number
- DE602019074821
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-10-24
- Filing Date
- 2019-10-25
- Publication Date
- 2025-08-27
- Estimated Expiration
- 2039-10-25
AI Technical Summary
Technical Problem
Existing image compression methods result in lower compression ratios when compressing images with texture features that are not aligned with the image axis, leading to inefficient use of bits due to non-zero DCT coefficients.
Method used
Rotate or geometrically transform texture features in images to align them with the image axis before performing discrete cosine transform (DCT), generating mostly zero DCT coefficients for improved compression.
Benefits of technology
Achieves higher compression ratios and faster transmission by reducing redundant information through alignment of texture features, resulting in minimal quality loss during decompression.
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