# sfr (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover sfr. Page: Feed: --- ## [The Effect of Sampling on Image Resolution](https://www.strollswithmydog.com/image-sampling-resolution/) _2026-03-06 · Jack · Strolls with my Dog_ We understand from the previous article that the process of digitizing an optical image with a photographic sensor can be thought of as two subsequent operations: filtering (convolution) of the optical image on the sensing plane by the pixel’s finite effective active area (aka pixel aperture); point sampling the convolved image at a given fixed … Continue reading The Effect of Sampling on Image… ## [Sampling in Imaging](https://www.strollswithmydog.com/sampling-in-imaging/) _2025-10-15 · Jack · Strolls with my Dog_ This article and the following one will discuss the effect on resolution of digitizing a continuous optical image. The sampling process carried out by the sensor results in digital values corresponding to an intensity at each pixel’s location. These so-called Data Numbers are stored ideally as-is in the raw file and are proportional to infinitesimal … Continue reading Sampling in Imaging → ## [Minimalist ESF, LSF, MTF by Monotonic Regression](https://www.strollswithmydog.com/spline-esf-lsf-mtf/) _2025-01-06 · Jack · Strolls with my Dog_ Because the Slanted Edge Method of estimating the Spatial Frequency Response of a camera and lens is one of the more popular articles on this site, I have fielded variations on the following question many times over the past decade: How do you go from the intensity cloud produced by the projection of a slanted … Continue reading Minimalist ESF, LSF, MTF by Monotonic Regression →