| Presentation | 1999/3/8 The image compression algorithms using addition and subtraction processing to simplify the hardware Toshiharu Suzuki, Yoshiaki Tadokoro, Shoji Kawahito, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We proposed the multi-rate discrete cosine transform (MR-DCT) using addition and subtraction processing to simplify the hardware for image compression. But, the PSNR of the reconstructed image using the MR-DCT is lower than that of the DCT. We consider the cause of the lower PSNR in the MR-DCT. It is clear that in the MR-DCT the higher frequency components over the band-limited signal disturb the lower frequency components of signal. And we propose the other image compression algorithms using addition and subtraction processing. First, we propose a method which uses the difference data between the pixel and block mean value. Second, we derive a conversion function from discrete walsh transform (DWT) coefficients to DCT coefficients. Third, we consider the projection method to transform the image into one-dimensional data. Finally, we show the characteristic of image compression using these methods. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | discrete cosine transform / addition and subtraction / multi-rate sampling / PSNR / JPEG |
| Paper # | DSP98-183 |
| Date of Issue |
| Conference Information | |
| Committee | DSP |
|---|---|
| Conference Date | 1999/3/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Digital Signal Processing (DSP) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | The image compression algorithms using addition and subtraction processing to simplify the hardware |
| Sub Title (in English) | |
| Keyword(1) | discrete cosine transform |
| Keyword(2) | addition and subtraction |
| Keyword(3) | multi-rate sampling |
| Keyword(4) | PSNR |
| Keyword(5) | JPEG |
| 1st Author's Name | Toshiharu Suzuki |
| 1st Author's Affiliation | Department of Information and Computer Sciences, Faculty of Engineering, Toyohashi University of Technology() |
| 2nd Author's Name | Yoshiaki Tadokoro |
| 2nd Author's Affiliation | Department of Information and Computer Sciences, Faculty of Engineering, Toyohashi University of Technology |
| 3rd Author's Name | Shoji Kawahito |
| 3rd Author's Affiliation | Department of Information and Computer Sciences, Faculty of Engineering, Toyohashi University of Technology |
| Date | 1999/3/8 |
| Paper # | DSP98-183 |
| Volume (vol) | vol.98 |
| Number (no) | 648 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |