Comparison of image compression algorithms ECE-533 Paula Aguilera.

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Presentation transcript:

Comparison of image compression algorithms ECE-533 Paula Aguilera

Five Different Formats FORMATNAMECHARACTERISTICS BMPWindows bitmapUncompressed format TIFFTagged Image File Format Lossless: Document scanning and imaging format. Flexible: LZW, CCITT, RLE. PNGPortable Network Graphics Lossless: improve and replace GIF, superior to TIFF JPEGJoint Photographic Experts Group Lossy: big compression ratio, good for photographic images JPEG 2000Joint Photographic Experts Group 2000 Lossy: eventual replacement for JPEG

Lossless (24 bit color) BMP 696 KB TIFF-LZW 378KB PNG 258KB JPEG 43,3KB

Lossless(8 bit color) BMP 257 KBTIFF LWZ 251KB PNG 173 KBJPEG 79 KB

Text compression: BMP 1,07MB TIFF CCITT4 50,9KB PNG 97,1KB JPEG 1M

JPEG Quality KB Quality 50 49,5KB Quality 10 16,3KB Quality 1 6,3KB

JPEG: Decreasing of the size

JPEG 2000 JPEG ,3KB JPEG 6,3KB

JPEG 2000 JPEG 148KB JPEG KB

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