ISET Application Notes
Scene
- High Dynamic Range Spectral (HDRS) Scene Database
The ISET package includes images from our high dynamic range spectral (HDRS) image database. These images are complete spectral approximations the light radiance field. The full HDRS image database includes a collection of additional images and customized software tools. This document describes the methodology we used to acquire the data and estimate the spectral radiance for the images in the HDRS database.
Optics
- Microlens Module
In many digital image sensors an array of microlenses is placed near each pixel aperture on the sensor surface. The position and properties of this microlens array control two important functions of the optical path from the sensor surface to the photodetector. First, the microlenses concentrate photons incident within the pixel aperture onto a compact region at the silicon substrate. Second, the microlens array redirects the light path.
- Incorporating Zemax lens descriptions into ISET simulations
ISET enables modeling the image formation of specific lenses. We provide a Zemax macro that you can use with a lens description file to model image formation. The image formation model is a ray trace from the scene to the sensor surface.
Processor
- Selecting a Color Conversion Matrix
This document gives a step-by-step description of using ISET to calculate a color correction matrix (CCM). The method is based on (a) simulating the responses to a Macbeth Color Checker under a specific illuminant, and (b) using the simulated sensor responses to derive a 3x3 linear matrix (a CCM) that can be used for Manual Matrix Entry.
Metrics
- Measuring the Visibility of Noise with the Minimum Photometric Exposure (MPE)
- Spatial Resolution and Sensitivity Tradeoffs
