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Image data compression having minimum perceptual error
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1997 |
| Description | A method is presented for performing color or grayscale image compression that eliminates redundant and invisible image components. The image compression uses a Discrete Cosine Transform (DCT) and each DCT coefficient yielded by the transform is quantized by an entry in a quantization matrix which determines the perceived image quality and the bit rate of the image being compressed. The quantization matrix comprises visual masking by luminance and contrast technique all resulting in a minimum perceptual error for any given bit rate, or minimum bit rate for a given perceptual error. |
| File Size | 1355484 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970018161 |
| Archival Resource Key | ark:/13960/t2k69dn31 |
| Language | English |
| Publisher Date | 1997-05-13 |
| Access Restriction | Open |
| Subject Keyword | Computer Programming And Software Patents Luminance Data Compression Images Color Masking Pixels Digital Data Discrete Cosine Transform Perceptual Errors Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
