New Photographic eSFR ISO
Photographic prints have over twice the resolution of inkjet prints, making them more suitable for higher resolution camera systems like DSLRs. The photographic substrate will benefit customers interested in testing high-resolution sensors as well as those performing close-range macro tests.
New Product: Imatest IT Parallel
Increasing testing throughput
The new Imatest Industrial Testing Parallel (IT-P) edition uses parallel processing to improve the throughput of Imatest IT and maximize the image processing power of your computing hardware. IT-P enables up to 3x more throughput to support test equipment that requires a high volume of images to be analyzed. IT-P improves the PPH (parts per hour) on assembly lines.
Imatest’s standard inkjet-printed test charts work in near infrared wavelengths up to 1.4 microns. Our specialized Infrared targets support testing in short and medium wavelengths (1.4-8 microns) and long wavelengths (8-15 microns) where they can produce adequate contrast to effectively test a range of infrared camera systems.
These test charts include high resolution slanted-edges that can measure sharpness variations across the entire image sensor. The targets support analysis of other key IR image quality factors, including noise and distortion.
SFRplus and eSFR ISO share many similar features and can be used to perform many similar image quality analyses. However, some of their features differ, and understanding which features differ will help you select the most appropriate test chart to analyze your imaging systems. This video outlines key differences between SFRplus and eSFR ISO.
Measuring MTF is not a typical application for Stepchart— certainly not its primary function— but it can be useful with multiburst patterns, which are a legacy from analog imaging that occasionally appear in the digital world. The multiburst pattern is not one of Imatest’s preferred methods for measuring MTF: see the MTF Measurement Matrix for a concise list. But sometimes customers need to analyze them. This feature is available starting with Imatest 4.1.3 (March 2015).
Here is a crop of a multiburst pattern, generated by a Tektronix device:
A correction factor for the slanted-edge MTF (Edge SFR; E-SFR) calculations in SFR, SFRplus, and eSFR ISO is available starting with Imatest 4.1.2 (March 2015). This correction factor is included in the ISO 12233:2014 standard, but is not in the older ISO 12233:2000 standard. Because it corrects for an MTF loss caused by the numerical calculation of the Line Spread Function (LSF) from the Edge Spread Function (ESF), we call it the LSF correction factor.
The LSF correction factor primarily affects very high spatial frequencies beyond most of the energy for typical high quality cameras. But it does make a difference for practical measurements: MTF50 for a typical high quality camera (shown below) is increased by about 1.5%. (more…)
Imatest in San Jose
Imatest representatives will visit San Jose the week of June 1st to offer a paid 2-day Training Course to professionals using or considering Imatest software to improve their image quality testing processes.
2-day Training Course
The Training Course on June 1 & 2 offers attendees insight on the full capabilities of Imatest software in both research & development and manufacturing environments.
The course will be held at the Larkspur Landing Hotel in Campbell, California and instructed by Norman Koren, Imatest CTO and Founder.
Companies that enroll 2 or more attendees will receive 20% off per attendee.
We look forward to meeting you in person.
Skyline photo by Timothy L. Preen
Imatest will hold a 2-day Training Course in Shenzhen, China on March 25 and 26. Register for the course and gain insight on the full capabilities of Imatest software in both R&D and manufacturing environments. ColorSpace and Gain Labs will host free Information Seminars on March 24th.