)]}' { "commit": "18e90d744eba2d28ad96a566565bbf5642d24b59", "tree": "8d0859ca6973ad522f4b1e30566ba67ea6ed886a", "parents": [ "3c872b6c27a5f03156b973fb359c9293049d6e84" ], "author": { "name": "Deb Mukherjee", "email": "debargha@google.com", "time": "Thu Feb 16 09:29:54 2012 -0800" }, "committer": { "name": "Deb Mukherjee", "email": "debargha@google.com", "time": "Thu Feb 23 09:25:21 2012 -0800" }, "message": "Supporting high precision 1/8-pel motion vectors\n\nThis is the initial patch for supporting 1/8th pel\nmotion. Currently if we configure with enable-high-precision-mv,\nall motion vectors would default to 1/8 pel. Encode and\ndecode syncs fine with the current code. In the next phase\nthe code will be refactored so that we can choose the 1/8\npel mode adaptively at a frame/segment/mb level.\n\nDerf results:\nhttp://www.corp.google.com/~debargha/vp8_results/enhinterp_hpmv.html\n(about 0.83% better than 8-tap interpoaltion)\n\nPatch 3: Rebased. Also adding 1/16th pel interpolation for U and V\n\nPatch 4: HD results.\nhttp://www.corp.google.com/~debargha/vp8_results/enhinterp_hd_hpmv.html\nSeems impressive (unless I am doing something wrong).\n\nPatch 5: Added mmx/sse for bilateral filtering, as well as enforced\nuse of c-versions of subpel filters with 8-taps and 1/16th pel;\nAlso redesigned the 8-tap filters to reduce the cut-off in order to\nintroduce a denoising effect. There is a new configure option\nsixteenth-subpel-uv which will use 1/16 th pel interpolation for\nuv, if the motion vectors have 1/8 pel accuracy.\n\nWith the fixes the results are promising on the derf set. The enhanced\ninterpolation option with 8-taps alone gives 3% improvement over thei\nderf set:\nhttp://www.corp.google.com/~debargha/vp8_results/enhinterpn.html\n\nResults on high precision mv and on the hd set are to follow.\n\nPatch 6: Adding a missing condition for CONFIG_SIXTEENTH_SUBPEL_UV in\nvp8/common/x86/x86_systemdependent.c\n\nPatch 7: Cleaning up various debug messages.\n\nPatch 8: Merge conflict\n\nChange-Id: I5b1d844457aefd7414a9e4e0e06c6ed38fd8cc04\n", "tree_diff": [ { "type": "modify", "old_id": "4646526c00bd91e15948660f764e0e5a34d9dce6", "old_mode": 33261, "old_path": "configure", "new_id": "e865f86605d83e40b84fbe7c694dbcaf40acad59", "new_mode": 33261, "new_path": "configure" }, { "type": "modify", "old_id": "16bfc4c99a65d8fe770eefa623503b70d730c034", "old_mode": 33188, "old_path": "vp8/common/blockd.h", "new_id": "934c740b22f6eb4f2688256576a7a944cccbb3b0", "new_mode": 33188, "new_path": "vp8/common/blockd.h" }, { "type": "modify", "old_id": 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