T.87 : Lossless and near-lossless compression of continuous-tone still images - Baseline
The images included in this package constitute the data set used for implementing the JPEG-LS conformance test as described in Section 8 and Annex E of the JPEG-LS standard document ITU-T Rec. T.87|ISO/IEC 14495-1
Uncompressed test images images are in either PGM (grayscale) or PPM (3-color) format. This is of course NOT part of the JPEG-LS standard. For more information on both formats, check the following link Readme Images included in the software provided with the recommandation.
Compression Testing Table
| File | Size before compressing | Compression used | Size after compressing |
| TEST8.PPM | 193 KB | Lossless | 99 KB |
| TEST8.PPM | 193 KB | Near-Lossless | 62 KB |
| TEST8R.PPM | 65 KB | Lossless | 33 KB |
| TEST8R.PPM | 65 KB | Near-Lossless | 21 KB |
| TEST8G.PPM | 65 KB | Lossless | 34 KB |
| TEST8G.PPM | 65 KB | Near-Lossless | 21 KB |
Decompression Testing Table
| Input File | Size before decompressing | Decompression used | Output File(s) | Sizes after decompressing (respectively) |
| T8C0E0.JLS | 100 KB | Lossless | locod1.out; locod2.out; locod3.out | 65; 65; 65 KB |
| T8C0E3.JLS | 63 KB | Near-Lossless | nlocod1.out; nlocod2.out; nlocod3.out | 65; 65; 65 KB |
| T8C1E0.JLS | 99 KB | Lossless | locod1.out; locod2.out; locod3.out | 65; 65; 65 KB |
| T8C1E3.JLS | 62 KB | Near-Lossless | nlocod1.out; nlocod2.out; nlocod3.out | 65; 65; 65 KB |
| T8C2E0.JLS | 98 KB | Lossless | locod.out | 193 KB |
| T8C2E3.JLS | 61 KB | Near-Lossless | nlocod.out | 193 KB |
| T16E0.JLS | 59 KB | Lossless | loco16d1.out | 129 KB |
| T16E3.JLS | 42 KB | Near-Lossless | nloco16d1.out | 129 KB |