Fidelity Criteria:how good is the compression algorithm -Objective Fidelity Criterion RMSE,PSNR -Subjective Fidelity Criterion: -Human Rating Value Rating Description 1 Excellent An image of extremely high quality,as good as you could desire. 2 Fine An image of high quality.providing enjoyable viewing.Interference is not objectionable. 3 Passable An image of acceptable quality.Interference is not objectionable. 4 Marginal An image of poor quality;you wish you could improve it.Interference is somewhat objectionable. 5 Inferior A very poor image,but you could watch it. Objectionable interference is definitely present. Unusable An image so bad that you could not watch it.Fidelity Criteria: how good is the compression algorithm -Objective Fidelity Criterion - RMSE, PSNR -Subjective Fidelity Criterion: -Human Rating