A Novel Psychovisual Threshold on Large DCT for Image Compression

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="center" colspan="2">8 × 8 JPEG compression</td><td align="center" colspan="2">256 × 256 JPEG compression</td></tr><tr class="thead"><td align="left">40 real images</td><td align="center">40 graphic images</td><td align="center">40 real images</td><td align="center">40 graphic images</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">230.997 Kb</td><td align="center">258.394 Kb</td><td align="center">158.792 Kb</td><td align="center">223.652 Kb</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

The average bit size of 8 × 8 JPEG compression and 256 × 256 JPEG compression using psychovisual threshold.

The Scientific World Journal

tab6

Table 6

Table 6: A Novel Psychovisual Threshold on Large DCT for Image Compression 