Image sharpness metric

Question

Is there some robust metric of image sharpness or bluriness? I have various set of images with different parameters of saturation and captured from different optical systems

Answer 1

You need a no-reference sharpness metric, such as:

• Cumulative probability of blur detection (CPBD) https://ivulab.asu.edu/software/quality/cpbd
• S3 http://vision.eng.shizuoka.ac.jp/pubs/pdfs/S3_preprint.pdf
• Just noticeable blur (JNB) https://ivulab.asu.edu/software/quality/jnbm
• LPC-SI https://ece.uwaterloo.ca/~z70wang/publications/TIP_LPCSharpness.pdf