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Bilateral Filter Wojciech Korycki 23.06.2010 Wrocław Implementations compare.

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Presentation on theme: "Bilateral Filter Wojciech Korycki 23.06.2010 Wrocław Implementations compare."— Presentation transcript:

1 Bilateral Filter Wojciech Korycki Wrocław Implementations compare

2 Bilateral Filter- introduction Bilateral filtering will preserve edges but… To high parameters, that is R = MAX, might change bilateral filter to normal Gaussian filter. (MAX- usually 255 or 1)

3 Bilateral Filter- implementations Application implemetations Bilateral Filter Normal Bilateral Filter CPU CPU (indexing) Fast approximation CUDA Cross Bilateral Filter CPU CPU (indexing) Fast approximation CUDA

4 Bilateral Filter- testing Test images

5 Bilateral Filter- testing Processing time tabble for 8-bit gray scale image Image Lena.bmp (512x512, 8-bit Gray Scale) Bilateral Filter Processing type Parameters SR SR S R t [s] CPU2,0236,82114,394 CPU (indexing)0,6941,1822,091 Fast Approximation0,1410,1370,201 CUDA0,0190,0510,108

6 Bilateral Filter- testing Processing time diagram for 8-bit gray scale image

7 Bilateral Filter- testing Visual results

8 Bilateral Filter- testing Processing time tabble for 24-bit RGB image image Iwonka.bmp (24-bit RGB) Bilateral Filter Processing type Parameters SR SR S R t [s] CPU2,3568,1217,728 CPU (indexing)0,9752,0854,11 Fast Approximation0,5380,3390,444 CUDA0,0260,080,174

9 Bilateral Filter- testing Processing time diagram for 24-bit RGB image

10 Bilateral Filter- testing Visual results

11 Bilateral Filter- testing Processing result

12 Bilateral Filter- summary General profit in CUDA processing (time in [s])

13 Bilateral Filter- addons Result of Cross Bilateral Filter processing + =

14 Bilateral Filter- addons Iterations= 10 iterations= 20

15 Bilateral Filter- side effects Fog effect

16 Bilateral Filter- side effects Edges blur


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