LiYuXie

Introduction

---

ISO has a set of camera image quality metrics to quantify resolution, noise, color accuracy of cameras.

Motivation The metrics are a set of values, but the effectiveness of these metrics might not be good for evaluation of real camera images, observed by human eyes. We need to evaluate the metrics by comparing the metrics and human observation.

Realization Through ISET, we can calculate the main metric to evaluate visual noise of a camera – VSNR. VSNR is the ratio of signal power to noise power, calculated from XYZ value of the processed image. By varying the Luminance, pixel size, and optical/sensor parameters, we evaluate whether the VSNR can match the observation of eyes or not for specific scenes, e.g. face, text, scenery.