A simple, general, and mathematically tractable sense of depth

摘要

In the most general form the defocusing operator is a linear,circularly symmetric, lowpass, and space variant filter. Without anyrestriction on the general model, the filter's bandwidth is used as ameasure of depth. The paper introduces a simple and efficient way toobtain this measure which has a well founded mathematical tractability.Experimental results indicates its high capability to resolve depth. Inthe regions of the image with the same texture, this parameter is a goodmeasure of the second derivative of the defocusing filter or depth