News

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 to use the camera in the real world. Failure to test a camera under low light conditions may lead to overstating the camera’s performance. (more…)

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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 a Google Pixel 2 XL. The dynamic range of a camera is the reproducible tonal range in an imaging system. Put simply, it is the range between the darkest black and the brightest white of an image and is typically measured in decibels (dB). (more…)

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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 the maximum dynamic range of a printer, which can be anywhere from 40:1 to 80:1.  The high contrast can lead to clipping of the signal which leads to overstated invalid MTF values. (more…)

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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 SNR, can be extremely high: 120 dB or more. But the dynamic range of real imaging systems is limited by veiling glare (flare light), arising from reflections inside the lens, and hence rarely approaches this level. (more…)

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Using Arbitrary Charts for Development of the P1858 Variation Combo Chart

The release of Imatest 5.0 introduced a number of powerful new features, including the Arbitrary Charts module which enables Imatest analysis of test chart designs which would be otherwise unsupported by the software. This new module allows user-defined chart layouts for any situation which requires one. (more…)

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Five reasons to use Imatest 5.0

This week, we launched Imatest 5.0. We built Imatest 5.0 to provide users with a streamlined workflow for more efficient image quality analysis. Here are five reasons to start using Imatest 5.0 today.

(more…)

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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, which has been discontinued as a separate product. This provides all of our customers with access to the acquisition library. The library supports direct acquisition from a wide range of frame grabbers and cameras, as well as industry standard interfaces. Direct image acquisition cuts out several steps in the image quality testing process and allows for in-the-loop testing with Imatest.

(more…)

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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 directly in front of the sun, the moon will cast a shadow racing across North America at supersonic speeds. From Salem, Oregon to Charleston, South Carolina, the 70 mile wide shadow will darken everything in its path. Outside the path of totality, all of North America will still be able to observe a partial solar eclipse! (more…)

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Imatest featured as one of three companies changing the autonomous driving landscape

Imatest was recently featured in Automoblog.net’s article, Three Companies Changing the Autonomous Driving Landscape. Carl Anthony writes:

“With driverless cars, the implication is huge because cameras will play a vital role in the forthcoming autonomous world. In order for autonomy to deliver on its promises of reducing collisions and traffic fatalities, image quality is essential. Imatest takes this into consideration as today’s automotive trends usher us further into autonomy.”

Read the full article at www.automoblog.net/2017/06/30/three-companies-changing-the-autonomous-driving-landscape/

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New Documentation Available for Imatest IT

Imatest is pleased to unveil updated documentation for Imatest IT. The documentation has been updated to include the latest software release (Imatest 4.5), including details for new features, filtering options for preferred languages, and several new Troubleshooting articles. (more…)

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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.

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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 indicate the limits of system performance and expected image quality.

But some Imatest results let you improve image quality— and subsequent images taken by the same system— by correcting measured aberrations. (more…)

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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 Mobile Imaging XIII sessions.

When: Tuesday, January 31, 2017, at 12:10 pm

By: Robert Sumner with support from Ranga Burada, Noah Kram (more…)

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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, 2017, at 10:10 am

By: Norman Koren with support from Henry Koren, Robert Sumner (more…)

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Best practices for using transmissive test charts

 

Light Source

Side chart largeThe most uniform light source available would be an integrating sphere, but these come with considerable size and expense. After considering how the light source uniformity impacts their results, most lab & manufacturing tests use LED or fluorescent lightboxes with flat-panel diffusers. (more…)

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Automating Lab and Manufacturing Processes

For many production departments tasked with balancing manufacturing outcomes with product design requirements, the process can be cumbersome, lagged in the past by human quality control and the need to correlate results with partner tests.

Integrating image quality software with automated testing equipment in the lab and manufacturing enables maximized efficiency and enhanced quality standards throughout the development cycle.

Join us on Wednesday, March 1, 2017, for our webinar, “Automating Lab and Manufacturing Processes” to learn how to raise quality standards while maximizing efficiency.

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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.

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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 be able to focus at a variety of distances. Optical systems on cameras only allow a certain range of distances from the camera to be in focus at once (this is often known as the depth of field, or depth of focus). (more…)

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Image Quality Testing for the Automotive Industry

Over the last few years, the automotive industry has taken great strides to incorporate camera systems into vehicles. From ADAS to rear-view cameras, there are many applications for camera systems in vehicles. 

With this integration of camera systems in the automotive industry, companies now have a variety of image quality factors to verify and standards to adhere to.  

Imatest is a leader in image quality testing solutions for the automotive industry. Join us for this free webinar to learn more about image quality testing in the automotive industry.

During this webinar, you can expect to learn:

  • An introduction to image quality factors and industry standards
  • What image quality factors matter most to the automotive industry
  • An overview of tests to deploy for automotive camera systems
  • How to begin testing your camera systems
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Fundamentals of Image Quality Testing

For many engineers tasked with designing camera systems for a product, image quality testing is a complicated endeavour given the variety of test charts and measurements available. 

Understanding which image quality factors to measure in your product and how to interpret results will ensure your product is equipped with quality imaging systems. (more…)

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