Analysis of Profiling Data

All the Similarity metrics were calculated for an image of size 4000x4000x3 MSE, PSNR, SSIM, MS-SSIM, UQI are calculated. Profiling data has been committed to differ.

Analysis of Profiling Data - some important points

Total elapsed time = 172.99 seconds

1. The following 5 main functions responsible for 81% of total time

calcMSSSIM::compare(_IplImage*, _IplImage*, Colorspace) [4] = 87.79sec

calcSSIM::compare(_IplImage*, _IplImage*, Colorspace) [3] = 17.35sec

calcQualityIndex::compare(_IplImage*, _IplImage*, Colorspace) [17] = 15.78sec

calcMSE::compare(_IplImage*, _IplImage*, Colorspace) [43] = 2.66sec

calcPSNR::compare(_IplImage*, _IplImage*, Colorspace) [44] = 2.66sec

2. Calculatin SSIM takes most of the time i.e. 65% since it is used by both SSIM and MS-SSIM

calcSSIM::compare(_IplImage*, _IplImage*, Colorspace) [3] = 65.8% of total time spent = 104.08sec

3. Individual functions in order of most time expensive -

cvSmooth = 31.9% 50.51 secs 211 calls

cvPow [11] = 11.6% 18.34secs 180calls

cvMul [14] = 10.8% 17.11secs 168calls

cvDiv [22] = 6.7% 10.59secs 78calls

cvSub [27] = 5.2% 8.20secs 126calls

cvAdd [34] = 3.5% 5.46secs 84calls

cvConvertScale [33] = 3.5% 5.48secs 187calls

cvAddS [38] = 1.7% 2.70secs 144calls

cvCvtColor [41] = 1.7% 2.66secs 38calls

sum total of above = 76.6%