TW200516868A - Image compression system using 2D discrete wavelet transformation - Google Patents
Image compression system using 2D discrete wavelet transformationInfo
- Publication number
- TW200516868A TW200516868A TW092130954A TW92130954A TW200516868A TW 200516868 A TW200516868 A TW 200516868A TW 092130954 A TW092130954 A TW 092130954A TW 92130954 A TW92130954 A TW 92130954A TW 200516868 A TW200516868 A TW 200516868A
- Authority
- TW
- Taiwan
- Prior art keywords
- image
- compression
- coding
- discrete wavelet
- data
- Prior art date
Links
Landscapes
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
Abstract
The present invention relates to an image compression/decompression structure using discrete wavelet transform (DWT), wherein the DWT technology is utilized to increase the compression ratio of the input image. Also, the zero-tree coding is utilized to reduce the amount of data required for coding/decoding the input image, so that the compression speed of the input image can be increased, and the data mount during data transmission can be reduced in cooperation with the frame interpolation compensation compression technology. During executing the quantization processing, the step value can be set to set the compression ratio of coding/decoding. Thus, not only the image can have less distortion, but the data amount of image and computation processing time can also be reduced, so as to realize the purpose of real-time image transmission.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92130954A TWI241074B (en) | 2003-11-05 | 2003-11-05 | Image compression system using two-dimensional discrete wavelet transformation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW92130954A TWI241074B (en) | 2003-11-05 | 2003-11-05 | Image compression system using two-dimensional discrete wavelet transformation |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200516868A true TW200516868A (en) | 2005-05-16 |
TWI241074B TWI241074B (en) | 2005-10-01 |
Family
ID=37013043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW92130954A TWI241074B (en) | 2003-11-05 | 2003-11-05 | Image compression system using two-dimensional discrete wavelet transformation |
Country Status (1)
Country | Link |
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TW (1) | TWI241074B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI624808B (en) * | 2016-04-12 | 2018-05-21 | 上海兆芯集成電路有限公司 | Image compressing method based on jpeg-ls |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9110849B2 (en) | 2009-04-15 | 2015-08-18 | Qualcomm Incorporated | Computing even-sized discrete cosine transforms |
US9069713B2 (en) | 2009-06-05 | 2015-06-30 | Qualcomm Incorporated | 4X4 transform for media coding |
US8762441B2 (en) | 2009-06-05 | 2014-06-24 | Qualcomm Incorporated | 4X4 transform for media coding |
US9081733B2 (en) | 2009-06-24 | 2015-07-14 | Qualcomm Incorporated | 16-point transform for media data coding |
US9118898B2 (en) | 2009-06-24 | 2015-08-25 | Qualcomm Incorporated | 8-point transform for media data coding |
US9075757B2 (en) | 2009-06-24 | 2015-07-07 | Qualcomm Incorporated | 16-point transform for media data coding |
US8451904B2 (en) | 2009-06-24 | 2013-05-28 | Qualcomm Incorporated | 8-point transform for media data coding |
US9824066B2 (en) | 2011-01-10 | 2017-11-21 | Qualcomm Incorporated | 32-point transform for media data coding |
-
2003
- 2003-11-05 TW TW92130954A patent/TWI241074B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI624808B (en) * | 2016-04-12 | 2018-05-21 | 上海兆芯集成電路有限公司 | Image compressing method based on jpeg-ls |
Also Published As
Publication number | Publication date |
---|---|
TWI241074B (en) | 2005-10-01 |
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