bd_rate_calculator_test.py

import unittest

from vmaf.tools.bd_rate_calculator import BDrateCalculator

__copyright__ = "Copyright 2016, Netflix, Inc."
__license__ = "BSD+Patent"


class BDrateCalculatorTest(unittest.TestCase):

    def setUp(self):
        self.setA = [(35.99646889759373, 21.955645250419696),
             (37.99471487409067, 25.51236452853944),
             (39.970621712367105, 28.044365039171787),
             (42.346972697257975, 30.479270893956333),
             (44.7457131337437, 32.55129509653048),
             (47.154365304980416, 34.35170492445439),
             (49.85285605484052, 36.159880512031336),
             (52.668811762730826, 37.817858687744824),
             (55.623246648013435, 39.4236739227756),
             (58.709821225517615, 40.97726075825405),
             (61.95339030218243, 42.47586071628426),
             (65.39086712367096, 43.94792672076104),
             (69.07053575825405, 45.38187315332959),
             (72.92296374930051, 46.7512838066592),
             (77.04220356463348, 48.12043552042529),
             (81.27714736989365, 49.42854125629547),
             (85.80023587017347, 50.72125632344712),
             (90.70151323447116, 52.02140726776721),
             (95.61377568550643, 53.247009597090084),
             (101.18490854504753, 54.54781877448235),
             (106.70571125909345, 55.77207227895914),
             (112.80107593732511, 57.05675384023505),
             (118.71002956351424, 58.22286424174595),
             (125.49624718522664, 59.4644650601567),
             (132.55080280358143, 60.67429805540012),
             (140.1958864969222, 61.90510035674314),
             (147.88641993844433, 63.041928063794046),
             (156.33494113598206, 64.22106624930048),
             (164.76788195858984, 65.33567544767766),
             (173.94668501398993, 66.48116736149971),
             (184.07738357022944, 67.64570549104643),
             (194.3000549748181, 68.7236593242865),
             (205.02014116955786, 69.79909077364297),
             (216.48558646334627, 70.86179997202017),
             (228.6963740850587, 71.91020905148292),
             (241.1654202574147, 72.91811104504754),
             (254.97357365976498, 73.96942905008393),
             (269.34394547845557, 74.9730472439843),
             (284.15034977056513, 75.93786445159483),
             (300.33591073866813, 76.91376459149411),
             (317.0971573363177, 77.86057887520982),
             (334.6360977616115, 78.78165542809175),
             (353.52509696138776, 79.69565129406824),
             (373.29134338556247, 80.57908869613874),
             (393.9552307218803, 81.44409020705092),
             (415.95752090095135, 82.30904120733068),
             (438.74847322327906, 83.13002760212642),
             (463.7617672915498, 83.97161655008395),
             (490.0063805707889, 84.77690864577501),
             (516.9553140067148, 85.5381991116396),
             (544.9439733240066, 86.28044596390599),
             (576.3607511751537, 87.049304036094),
             (607.7912813486286, 87.75004198377168),
             (642.9993396698372, 88.46859445998881),
             (678.4288774650249, 89.13938649272522),
             (716.0146116899828, 89.79232830861778),
             (757.1422397593731, 90.43804418019025),
             (799.5379996586456, 91.04304998601005),
             (843.7057127476214, 91.61936168158924),
             (891.0241835086737, 92.18129753777283),
             (941.0654296082818, 92.7274914871293),
             (992.0100858869608, 93.22531138080583),
             (1049.361345377728, 93.72490778539446),
             (1106.0225737101287, 94.16627750419697),
             (1169.031521835478, 94.61364252937885),
             (1234.2873478623392, 95.02554775461667),
             (1303.8650088919974, 95.42153838836039),
             (1377.1698176105203, 95.788557491606),
             (1453.2463230386118, 96.12595161583663),
             (1532.4943320201453, 96.43917551762732),
             (1621.3588033296023, 96.747294998601),
             (1705.825332271964, 97.00223929071069),
             (1807.3925386066035, 97.27276210128707),
             (1908.5000484107447, 97.50972255875773),
             (2014.398598975937, 97.72906203133745),
             (2127.9466272691657, 97.92876842473417),
             (2245.784021667598, 98.10873614297704),
             (2371.8831237045324, 98.2783919418019),
             (2505.2980083995526, 98.43403286233912),
             (2644.597092540571, 98.57010871572473),
             (2790.9417932904316, 98.69238183407946),
             (2948.672410660327, 98.80515458869611),
             (3107.1893589871306, 98.90337104085056),
             (3288.155564739787, 98.99696463346388),
             (3470.8710826636825, 99.07321914521543),
             (3665.2945898880803, 99.14012702853941),
             (3869.5733634862895, 99.19701270285395),
             (4071.5218731505315, 99.24300500839394),
             (4311.484267084497, 99.28674711807501),
             (4558.244802909904, 99.31946469641859),
             (4806.482321382206, 99.34378444320092),
             (5079.722132064913, 99.36144804141017),
             (5361.911769636264, 99.37290286793508),
             (5665.047368091774, 99.38022224398433),
             (5973.631636653609, 99.38404458589815),
             (6315.611591936206, 99.38606273782877),
             (6667.651857364297, 99.3870162283156),
             (7037.4516035086735, 99.3875896334639),
             (7434.023280637938, 99.38792124370454)]

    def test_bd_rate_calculator_identical(self):

        bd_rate = BDrateCalculator.CalcBDRate(self.setA, self.setA)
        self.assertAlmostEqual(bd_rate, 0.0, places=8)

    def test_bd_rate_calculator_different_slightly(self):

        setB = [(35.99646889759373, 21.955645250419696),
             (37.99471487409067, 25.51236452853944),
             (39.970621712367105, 28.044365039171787),
             (42.346972697257975, 30.479270893956333),
             (44.7457131337437, 32.55129509653048),
             (47.154365304980416, 34.35170492445439),
             (49.85285605484052, 36.159880512031336),
             (52.668811762730826, 37.817858687744824),
             (55.623246648013435, 39.4236739227756),
             (58.709821225517615, 40.97726075825405),
             (61.95339030218243, 42.47586071628426),
             (65.39086712367096, 43.94792672076104),
             (69.07053575825405, 45.38187315332959),
             (72.92296374930051, 46.7512838066592),
             (77.04220356463348, 48.12043552042529),
             (81.26477027979853, 49.42465443480694),
             (85.78785878007832, 50.71736950195859),
             (90.68913614437604, 52.017520446278674),
             (95.6013985954113, 53.24312277560156),
             (101.1049438220481, 54.528708883603784),
             (106.72526639059875, 55.77544413122552),
             (112.82063106883044, 57.06012569250141),
             (118.72958469501955, 58.22623609401232),
             (125.51580231673195, 59.46783691242307),
             (132.55080280358143, 60.67429805540012),
             (140.1958864969222, 61.90510035674314),
             (147.88641993844433, 63.041928063794046),
             (156.33494113598206, 64.22106624930048),
             (164.76788195858984, 65.33567544767766),
             (173.94668501398993, 66.48116736149971),
             (184.07738357022944, 67.64570549104643),
             (194.3000549748181, 68.7236593242865),
             (205.02014116955786, 69.79909077364297),
             (216.48558646334627, 70.86179997202017),
             (228.6963740850587, 71.91020905148292),
             (241.1654202574147, 72.91811104504754),
             (254.97357365976498, 73.96942905008393),
             (269.34394547845557, 74.9730472439843),
             (284.15034977056513, 75.93786445159483),
             (300.33591073866813, 76.91376459149411),
             (317.0971573363177, 77.86057887520982),
             (334.6360977616115, 78.78165542809175),
             (353.52509696138776, 79.69565129406824),
             (373.29134338556247, 80.57908869613874),
             (393.9552307218803, 81.44409020705092),
             (415.95752090095135, 82.30904120733068),
             (438.74847322327906, 83.13002760212642),
             (463.7617672915498, 83.97161655008395),
             (489.84063154448785, 84.77202437045325),
             (516.7895649804138, 85.53331483631784),
             (544.9749663626188, 86.28081538192502),
             (576.8655284890876, 87.06078310016787),
             (607.6881892445435, 87.74725560996083),
             (642.8791074762167, 88.46546687185227),
             (678.3086452714043, 89.13625890458867),
             (715.8616087185223, 89.78865049664242),
             (757.1041860772242, 90.435000188864),
             (798.15463343033, 91.02080761052042),
             (843.5981930665919, 91.61538377867933),
             (890.6553361611639, 92.17446489927256),
             (941.2275728427528, 92.72510695299388),
             (991.9775666759929, 93.22055148992727),
             (1049.150817448237, 93.71790935926131),
             (1105.4788035310573, 94.15517948377166),
             (1169.7203790151086, 94.61349013010631),
             (1235.467531913822, 95.02758209988808),
             (1303.7973206323445, 95.41458729015112),
             (1375.6589572915498, 95.77265730973697),
             (1454.1877533575819, 96.1213997341914),
             (1535.3317379966425, 96.43969173894797),
             (1619.041704728595, 96.72884599188583),
             (1706.2542370173471, 96.9918582470621),
             (1806.7879060156686, 97.25875356043645),
             (1907.8936883939557, 97.4924479854505),
             (2012.3483121992158, 97.70996307358699),
             (2126.4842019585894, 97.90953160324563),
             (2245.182894241745, 98.08930167879124),
             (2370.2106903693343, 98.25233185506434),
             (2500.319466463347, 98.3971445928931),
             (2643.4560019809737, 98.52912282456631),
             (2778.632123116957, 98.63288324006716),
             (2948.7437885674317, 98.738307113878),
             (3109.8279768214884, 98.81400232232791),
             (3278.805042137661, 98.8647137101287)]

        bd_rate = BDrateCalculator.CalcBDRate(self.setA, setB)
        self.assertAlmostEqual(bd_rate, 0.0003232105064476798, places=8)

    def test_bd_rate_calculator_different(self):

        setB = [(49.87328328483493, 28.61330510632344),
             (52.38326659205375, 32.39771999160604),
             (55.48787012870734, 35.43877945579183),
             (58.73340142697256, 37.81863505176273),
             (61.38781766088415, 39.45287702853945),
             (65.24973810856183, 41.51289594991606),
             (68.91803592053719, 43.25002306939003),
             (72.90461613878006, 44.95657251678791),
             (76.50681894795746, 46.343293172915494),
             (81.22743775601566, 48.06086461947399),
             (85.8963679574706, 49.55961627728036),
             (90.6221019585898, 50.90070572887522),
             (95.65390898712923, 52.23381047146056),
             (101.13434360380525, 53.61339359960829),
             (106.40240546726353, 54.8475233841634),
             (112.42335666480132, 56.18486674594291),
             (118.79365039171795, 57.459968270844996),
             (125.05231551203133, 58.63419768466705),
             (132.43335461667598, 59.89586900531618),
             (139.88996440962507, 61.0835185996083),
             (146.16949280917734, 62.04168247761612),
             (155.7417632232793, 63.3899363878008),
             (163.313640956911, 64.36612914101849),
             (173.5439432232792, 65.58913973139342),
             (182.53828067711245, 66.58945198656969),
             (193.15859545047564, 67.70600593172915),
             (204.38533732512593, 68.81500302182431),
             (215.95536735310577, 69.90734120033578),
             (227.63617066032455, 70.90756786513711),
             (241.31498514829323, 71.9597451385003),
             (253.7268753273643, 72.82036908925575),
             (267.2595965472859, 73.70446921516509),
             (283.9250800223839, 74.66681882344713),
             (294.27475915500827, 75.23454667039732),
             (316.458982495803, 76.38518377867935),
             (334.1048723838837, 77.20506813094572),
             (352.4061945998881, 77.96106693480695),
             (369.71439789031893, 78.57269429910465),
             (388.71730656966986, 79.09373393956353),
             (416.22584212646893, 79.73839594292109),
             (431.8296127756015, 80.04573062395076),
             (456.8111591046446, 80.4380911723559),
             (489.9550944711808, 80.81746619334079),
             (505.8411566927812, 80.9060061345831),
             (531.839469233352, 81.04617807078903)]

        bd_rate = BDrateCalculator.CalcBDRate(self.setA, setB)
        self.assertAlmostEqual(bd_rate, 0.08267113720900943, places=8)


class BDrateCalculatorJCTVCTest(unittest.TestCase):

    def test_bd_rate_calculator_1(self):
        self.assertAlmostEqual(BDrateCalculator.CalcBDRate(
            [(108048.8736, 43.6471), (61279.976, 40.3953), (33905.6656, 37.247), (18883.6928, 34.2911)],
            [(108061.2784, 43.6768), (61299.9936, 40.4232), (33928.7472, 37.2761), (18910.912, 34.3147)]),
            -0.00465215420752807, places=4)

    def test_bd_rate_calculator_2(self):
        self.assertAlmostEqual(BDrateCalculator.CalcBDRate(
            [(40433.8848, 37.5761), (7622.7456, 35.3756), (2394.488, 33.8977), (1017.6184, 32.0603)],
            [(40370.12, 37.5982), (7587.0024, 35.4025), (2390.0944, 33.9194), (1017.0984, 32.0822)]),
            -0.018779823450567612, places=4)


if __name__ == '__main__':
    unittest.main(verbosity=2)