It can also measure the information capacity of pixels. Star Chart, which can be run in the interactive Rescharts interface or as a fixed (batch-capable) module, measures SFR (Spatial Frequency Response) also known as MTF (Modulation Transfer Function) from Siemens star charts, which are included the ISO 12233:2014 standard.
MTF contours – Information capacity – Sine vs.
Introduction – Creating, photographing, running – Output – MTF – MTFnn, MTFnnP See below.Ī new web page, Slanted-edge versus Siemens Star – A comparison of sensitivity to signal processing, has been published. Imatest 4.0: Automatic region detection is available for a new version of the Star Chart that has registration marks on the sides. Stars with 24 or 16 cycles can be analyzed.Bar (square wave) star patterns can be analyzed with a few restrictions.Stars with no inner circles can be analyzed.A star-only pattern (without density patches, etc.) can be selected in Chart configuration.Half-stars (rotated by multiples of 45º) can now be analyzed.The white paper, “ Camera information capacity: a key performance indicator for Machine Vision and Artificial Intelligence systems “, which briefly introduces information theory, describes the camera information capacity measurement, then shows results (including the effects of artifacts) is now available for download. The old slanted-edge method has been deprecated. 2020) Shannon information capacity can be calculated from images of the Siemens star, with much better accuracy than slanted-edges.
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