Imatest and Furonteer Reduce Camera Intrinsic Calibration Time with Automated Machines
BOULDER, CO – JUNE 25TH, 2019 — Imatest, a global image quality testing solution provider, partnered with Furonteer, an automation […]
Understanding collimator MTF loss using bronze and golden sample testing
by Henry Koren, inspired by Paul Romanczyk, edited by Norman Koren Not all MTF measurement systems will necessarily provide the […]
Reducing the cross-lab variation of image quality metrics
Abstract As imaging test labs seek to obtain objective performance scores of camera systems, many factors can skew the results.
Considerations when evaluating a Near Infrared camera
Recent growth in the automotive and security industries has increased the number of cameras designed for viewing both Near Infrared […]
Increasing the Repeatability of Your Sharpness Tests
By Robert Sumner With contributions from Ranga Burada, Henry Koren, Brienna Rogers and Norman Koren Consistency is a fundamental aspect of […]
Why is it Important to Test in Low-Light?
It is important to test your camera system in environments which reproduce lighting conditions similar to where you intend […]
How to Test Dynamic Range: A step-by-step use case with the Pixel 2 XL
In this post, we will be using the Contrast Resolution Chart and Imatest Master to measure the dynamic range of […]
High-contrast edge-SFR test targets produce invalid MTF results
The obsolete ISO 12233:2000 standard defines a resolution test target with a high contrast ratio. These are typically produced at […]
Measuring the impact of flare light on dynamic range
Abstract The dynamic range of recent HDR image sensors, defined as the range of exposure between saturation and 0 dB […]
Imatest IS Discontinued with Image Acquisition now Available in Imatest Master
As of Imatest 5.0, Imatest Master now features image acquisition capabilities. Previously, image acquisition capabilities were supported by Imatest IS, […]
Shooting the Great American Total Solar Eclipse
As predicted by astronomers years in advance, a peculiar cosmic event will occur on the morning of August 21st. Passing […]
Challenges in Automotive Image Quality Testing
Imatest’s Norman Koren presents his vision for challenges in automotive image quality testing including resolving low-contrast scenarios.
Closing the Loop: Distortion Correction
Imatest’s charts and software allow you to measure the characteristics and parameters of imaging systems. Quite often these measurements simply […]
The Effects of misregistration on the dead leaves cross-correlation texture blur analysis
This paper was given as part of the Electronic Imaging 2017 Image Quality and System Performance XIV and Digital Photography and […]
Measuring MTF with wedges: pitfalls and best practices
This paper was given as part of the Electronic Imaging 2017 Autonomous Vehicles and Machine session. When: Monday, January 30, […]
Testing a macro lens using Checkerboard and Micro Multi-slide
Imatest’s Checkerboard module is our new flagship module for automated analysis of sharpness, distortion and chromatic aberration from a checkerboard (AKA chessboard) pattern. The big benefit of using the checkerboard is that there are looser framing requirements than with other kinds of test targets. While checkerboard lacks the color and tone analysis provided by SFRplus and eSFR ISO, these features are not available on the high precision chrome on glass substrate, so the checkerboard is the optimal pattern for this test.
Using Sharpness to Measure Your Autofocus Consistency
Autofocus plays a major role in many camera system applications with variable focus, including consumer electronic devices. Camera systems must […]
Imatest Support for CPIQ Metrics
What is CPIQ? IEEE-SA working group P1858 created the CPIQ standard. CPIQ seeks to standardize image quality test metrics and methodologies […]
Color difference ellipses
Starting with Imatest 4.2, Imatest’s two-dimensional color displays— CIELAB a*b*, CIE 1931 xy chromaticity, etc.— in Multicharts, Multitest, Colorcheck, SFRplus, and eSFR ISO can display ellipses that assist in visualizing perceptual color differences. You can select between MacAdam ellipses (of historical interest), or ellipses for ΔCab (familiar but not accurate), ΔC94, and ΔC00 (recommended).
Measuring Multiburst pattern MTF with Stepchart
Measuring MTF is not a typical application for Stepchart— certainly not its primary function— but it can be useful with […]