SUPPLEMENTAL MATERIAL: Compression Experiments Factoring Repeated Content Within and Among Images (SIGGRAPH 2008 submission 0064)

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Presentation transcript:

SUPPLEMENTAL MATERIAL: Compression Experiments Factoring Repeated Content Within and Among Images (SIGGRAPH 2008 submission 0064)

Comparison with JPEG 2000 Original image 592 x 448 pixels Our factored representation - epitome compressed to 5KB using JPEG transform map compressed to 5KB JPEG 2000 compression of original image - compressed to 10KB (same storage size) - Our factoring is orthogonal to JPEG 2000, and at high compression rates it offers higher quality than JPEG 2000 alone. - As discussed further in the rebuttal, our motivation is to reduce memory usage of texture images for real-time rendering. Because JPEG 2000 requires decompression prior to rendering, we feel that this comparison is interesting but not completely appropriate. (Requires 796KB for rendering)(Requires 42KB for rendering)(Requires 796KB for rendering)

Close-ups Original image

Close-ups Our factored representation, in 10KB

Close-ups JPEG 2000 alone, in 10KB

Original image 1792 x 944 pixels

Our factored image representation - Epitome compressed using JPEG 2000 to 35KB - Transform map compressed to 35KB (for a total of 70 KB) (Requires 1.3MB for rendering)

JPEG 2000 on original image Original image compressed using JPEG 2000 to 70 KB (Requires 5.1MB for rendering)

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