xinntao / matlab_functions_verification

matlab_functions_verification

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MATLAB version: R2017b (9.3.0.713579)
64-bit (glnxa64)

imresize bicubic

Recommend to use bicubic_pytorch.

Accuracy

Scale	Diff (Ours)	Diff ratio (Ours)	Diff (bicubic_pytorch)	Diff ratio (bicubic_pytorch)
Downsample X2	2	0.00%	4	0.01%
Downsample X3	0	0.00%	1	0.00%
Downsample X4	0	0.00%	0	0.00%
Upsample X2	86	0.01%	268	0.03%
Upsample X3	515	0.02%	759	0.04%
Upsample X4	67	0.00%	3119	0.08%

Speed

Run on CPU Intel(R) Xeon(R) CPU E5-2650 v4 @ 2.20GHz.

Average on 100 runs.

Scale	Time (Ours)	Time (bicubic_pytorch)	MATLAB
Downsample X2	0.0689	0.0019	0.0017
Downsample X3	0.0475	0.0028	0.0013
Downsample X4	0.0236	0.0023	0.0014
Upsample X2	0.2146	0.0627	0.0044
Upsample X3	0.3585	0.1078	0.0099
Upsample X4	0.4949	0.1631	0.0173