Imatest图像处理软件

Measure device sharpness (MTF), perceptual sharpness (SQF), color response, noise, dynamic range, tonal response, lens flare (veiling glare), lens distortion, lens vignetting, and sensor nonuniformity with SFR, Colorcheck, Multicharts, Stepchart, Distortion, and Light Falloff. 

Imatest是美国Imatest LCC公司开发的专业数码影响评测软件，涵盖了MTF、SQF、SFR 、色彩还原、杂讯、动态范围等图像指标测试，兼用于数码相机、打印机、扫描仪等进行完整测试内容。软件系统建立于著名的工程数学运算平台Matalab，具有相当高的可靠性，制图内容相当有深度。 
 

 

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Imatest™ version comparison
Module	Light	Pro  (includes all features of Light)
	Everything an individual photographer needs to test cameras, lenses, and printers.	The full-featured version for professionals and imaging system developers.
SFR	Edge, MTF (SFR), and Chromatic aberration analysis	Batch runs (multiple input files); MTF calculated for any edge angle; edge and MTF display for R, G, and B channels in addition to Y
Colorcheck	Tonal response and noise analyses for B&W patches; La*b* color error and Color analysis	Batch runs (multiple input files); User-supplied reference files; noise analysis for R, G, B, C, M, and Y patches; noise spectrum
Stepchart	Tonal response, noise, dynamic range analysis, and veiling glare	Batch runs (multiple input files); density values can be read from a file; tonal response for separate R, G, B, Y channels (in figure 3); analyzes the Applied Image QA-61 (ISO-16067-1), QA-62, ST-51 (EIA grayscale), ST-52 (ISO-14524) 12-patch OECF chart, 20-patch OECF charts, and the ISO-15739 (Noise) chart.
Light Falloff	Light falloff (luminance channel) displayed in normalized pixel levels and f-stops	Batch runs (multiple input files); Light falloff for R, G, and B channels; histograms for R, G, and B channels; display dead and hot pixels; color shading (sensor nonuniformity); noise detail
Print Test	Print tonal response and gamut in La*b* and xyY spaces	Print gamut in HSL representation
Test Charts	SFR Quadrants, SFR rectangles, Grid (for Distortion)	Star, Log-frequency contrast/gradient, Zone plate, Scalable Vector Graphics (SVG) charts
Distortion	Calculate distortion for 3rd and 5th order polynomial and tan/arctan approximations.	Batch runs (multiple input files); Lens decentering; Intersection point plot; Corrected image display
Multicharts	Analyzes the 24-patch Colorchecker and the IT8.7. Highly interactive.	Includes the Colorchecker SG, Grayscale step charts, and Special Charts (squares arranged on a circle and several Applied Image and ISO charts). Calculates Color correction matrix.
MTF Compare	(Pro only)	Allows MTF results calculated in SFR and saved in CSV files to be compared for a wide variety of cameras, lenses, and imaging systems.
Rescharts	Analyze slanted edges (similar to SFR) and charts that vary in spatial frequency for MTF. Highly interactive.	Adds color moiré analysis to Log Frequency, Log F-Contrast, which analyzes fine detail lost as a result of software noise reduction, and Star Charts.

 

Comparision between versions

SFR	Light	Pro
Edge and MTF (SFR) plot
Chromatic aberration plot
Batch runs (multiple input files)