Including support for the 2023 “slanted star” revision of the ISO 12233 resolution standard, improved stray light, and improved dynamic range analysis.
These targets provide spectrally neutrality and diffuse Lambertian reflectance for camera uniformity testing. Available in a range of sizes for close and medium-range applications. We also provide Uniform Light Sources.
Validate endoscope illuminator uniformity with a NIST-calibrated reflectance target and Imatest Flatfield analysis. Large 18% and 70% reflectance targets can be combined with a color test chart to provide a consistent background for white balance, chroma level, and color uniformity testing. LIDAR Reflectance standards are available from 5-95% reflectivity across wide spectrum UV-VIS-NIR.
At Autosens Brussels 2023, Imatest demonstrated the Imatest Benchtop Test Stand-Stray Light/Target Projector Version.
Norman Koren, founder of Imatest, presented a talk on Information Capacity.
The BTS is equipped with the Imatest Stray Light LED Source.
View this video for a virtual visit (watch on Youtube)
Watch Henry Koren’s interview with Autosens Insights (watch on Youtube)
The IEEE P1858 standard for Camera Phone Image Quality has produced two revisions of its Camera Phone Image Quality (CPIQ) standard. This standard focuses on Perceptual Image Quality, which relies on psychophysical studies to quantify how and to what degree image quality degradation is noticeable to a human observer.
The P1858 working group is looking to develop additional metrics to understand further what makes a good-quality image. The development of psychophysical studies is also required to complete the 1858-2023 video quality metrics.
Local Contrast / HDR: A high dynamic range (HDR) scene will need to have local tone mapping applied in order to present it on a lower dynamic range display. Local tone mapping (LTM) may be modeled to emulate the adaptive perception of the human visual system. If not applied optimally, this processing can lead to the loss of mid-tones or an increase of perceptible anomalies. This process is complicated by the proprietary nature of many of the processing algorithms. The P1858 working group seeks to create a method of characterizing the perceptual quality of these local contrast-enhancing image processing techniques.
Sharpening Artifacts: For images prepared for presentation to humans, sharpening is typically part of the image processing pipeline. This processing can lead to visible “halo” artifacts around edges which will appear differently depending on the amount of oversharpening applied and the radius of the halo artifact. The P1858 working group seeks to determine the threshold of noticeability, impact on visual quality, and uncanniness that can be side effects of high levels of sharpening in order to guide the creation of more optimal image processing pipelines in the future.
Examples of unsharpened and oversharpened image processing (source: Henry Dietz Quora):
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Unsharpened image |
Oversharpened Image |
Video Visual Noise: The P1858 working group would like to determine the temporal impacts of noise to extend the still-image-based visual noise metrics from 1858-2016.
Video Jitter JND: IEEE 1858-2023 introduced a new jitter measurement for video. The P1858 working group seeks to determine the noticeability of jitter in real or simulated video recordings and transmissions.
The IEEE P1858 working group is interested in connecting and collaborating with companies and research organizations that are interested in contributing to the work of designing and conducting psychophysical research. This effort will advance the understanding of the human visual system.
Please contact psychophysics@imatest.com if you are interested in participating.
2 May 2023, Boulder, CO. Imatest releases version 23.1 with new updates and features including improved settings in GUI, new slanted-edge-based measurements, EMVA 1288 additions, arbitrary charts video, exposure and distortion support, Gamutvision incorporation, and more.
Happy Holidays from Imatest. We hope you have a safe and enjoyable holiday season spent with friends and family. We want to thank you all for your continued support throughout 2022 and into 2023. Cheers to a new year filled with opportunity and advancements!
Take a look back at some of our notable product releases of this year:
11 October 2022, Boulder, CO. Imatest releases version 22.2 with new updates and features including Stray Light (Flare) Analysis, Auto Exposure and Auto White Balance measurements in Color/Tone, Compare two images for 3D (stereo imaging) compatibility in Focus Field, and Enhanced image preview.
Imatest is excited to announce we were awarded Best Validation Simulation Tool for our software and charts at AutoSens Brussels 2022. These awards celebrate the best and brightest working at the cutting-edge of innovation in ADAS and autonomous vehicle technology. View the full list of winners here: https://auto-sens.com/events/awards/