https://svn.lrde.epita.fr/svn/oln/trunk/milena Index: ChangeLog from Nicolas Ballas <ballas(a)lrde.epita.fr> Add a benchmark on run_image types compression efficiency. * doc/benchmark: New. * doc/benchmark/compression.txt: New, doc. * img/space_debris.pgm: a new image. doc/benchmark/compression.txt | 47 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) Index: doc/benchmark/compression.txt --- doc/benchmark/compression.txt (revision 0) +++ doc/benchmark/compression.txt (revision 0) @@ -0,0 +1,47 @@ + -*- outline -*- + +* Compression ratio benchmarks: + +** Test process: + - Load the initial image. + - Label the image using the labelling::blobs algorithm. + - Do a fold transformation on the loaded image. + - Encode the loaded image into the destination type. + - Compute the compression ratio of the encoded image. + +** Compression ratio: +The compression ratio is computed the following way: + CR = image_memory_size / size_of(point) * number_of_image_points + +** Tested images: + +--- Images - Size --- +trunk/img/small.pgm 4.1K +trunk/img/space_debris.pgm 1.3M + + +** rle_image: + +--- Images - Compression Ratio - Time --- +trunk/img/small.pgm 0.494708 0.052s +trunk/img/space_debris.pgm 0.112602 34.440s + + +** sparse_image: + +--- Images - Compression Ratio - Time --- +trunk/img/small.pgm 0.596522 0.054s +trunk/img/space_debris.pgm 0.144853 34.637 + + +** mono_rle_image: + +--- Images - Compression Ratio - Time --- +trunk/img/small.pgm 0.610811 0.044s +trunk/img/space_debris.pgm 0.000688533 10.604s + +** mono_obased_rle_image: + +--- Images - Compression Ratio - Time --- +trunk/img/small.pgm 0.955393 0.067s +trunk/img/space_debris.pgm 0.216746 40.001 Index: img/space_debris.pgm Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Property changes on: img/space_debris.pgm ___________________________________________________________________ Name: svn:mime-type + application/octet-stream