Getting Started – Imatest

Mounted Charts

Henry Koren — Tue, 22 Aug 2023 00:00:00 +0000

Image quality test charts should be mounted on a smooth flat surface, like an acrylic board, to ensure no blemishes, bends, or bubbles occur that negatively impact image quality measurements. Imatest offers the option to professionally mount our test charts on acrylic or E-panel.

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Intro to Imatest Master

Mon, 15 Aug 2022 00:00:00 +0000

Learn how to use our Imatest Master software.

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How to Select a Test Chart

Tue, 20 Nov 2018 00:00:00 +0000

The design, size, and substrate of your test charts are determined by the resolution of your sensor, field of view and working distances of your lens, and the image quality factors you need to test.

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Field of View affects your Test Lab

Thu, 18 Oct 2018 00:00:00 +0000

Lenses with normal, wide, ultra-wide, and narrow fields-of-view will determine the charts and equipment you need to properly test your camera systems.

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Lighting Considerations For Image Quality Testing

Thu, 06 Sep 2018 00:00:00 +0000

Even, glare-free illumination is essential for achieving accurate, repeatable measurements. Learn about the most important factors to consider when selecting proper lighting for your image quality testing requirements.

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Getting Started With Image Quality Testing

Mon, 27 Aug 2018 00:00:00 +0000

To begin measuring image quality factors with Imatest software, it is important to set up a controlled lab environment with proper charts and lighting, tailored to the system you are testing.

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Key Considerations For Imaging Test Labs

Mon, 27 Aug 2018 00:00:00 +0000

Before performing image quality testing, consider your unique requirements and lab environment variables including imaging system alignment, test/focusing distance, camera support, lighting, and chart selection/mounting.

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Arbitrary Chart Definition – Part 1

Henry Koren — Wed, 25 Oct 2017 06:00:00 +0000

Part 1 of our how-to series on Arbitrary Charts, the Imatest module that analyzes almost any chart layout, including your own custom designs. The video walks through describing a chart to Imatest: loading the image, choosing the chart definition file, and building that definition in JSON, using the IEEE P1858 combination chart as the example.

A chart definition gives the chart’s aspect ratio and background, then lists each feature with its position, size and rotation in normalized chart coordinates: registration marks for locating the chart, slanted squares and slanted edges for sharpness, and color and gray patches.

Arbitrary Charts documentation
Chart definition reference: every feature type and its JSON fields
Using Arbitrary Charts to develop the P1858 Variation Combo Chart, and the P1858 Variant Combo Test Chart itself

Arbitrary Charts is included in Imatest Master and Imatest IT.

Read the Arbitrary Charts docs Start a free trial

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