High-frequency flickering light sources such as pulse-width modulated LEDs can cause image sensors to record incorrect levels. We describe a model with a loose set of assumptions (encompassing multi-exposure HDR schemes) which can be used to define the Flicker Signal, a continuous function of time based on the phase relationship between the light source and exposure window. (more…)
Camera-based advanced driver-assistance systems (ADAS) require the mapping from image coordinates into world coordinates to be known. The process of computing that mapping is geometric calibration. This paper provides a series of tests that may be used to assess the goodness of the geometric calibration
Shannon information capacity, which can be expressed as bits per pixel or megabits per image, is an excellent figure of merit for predicting camera performance for a variety of machine vision applications, including medical and automotive imaging systems.
Measuring the MTF of an imaging system at its operational working distance is useful for understanding the system’s use case performance. (more…)
Imatest, a global image quality testing solution provider, is pleased to announce Imatest 2020.1 that adds new features on top of the major enhancements made in version 5.2. This new release further enhances the software with stability updates and regular improvements. See the Imatest Change Log for details.
Imatest Customers and Partners,
As the COVID-19 coronavirus continues to spread, the health and safety of our team, community, customers and partners are our top priority. In accordance with recommendations from U.S. Centers for Disease Control and Prevention (CDC ); the World Health Organization (WHO); and local, state and federal governments, Imatest is taking steps to help prevent it spreading further and to minimize the impact. (more…)
The research papers presented at this year’s Electronic Imaging Symposium (EI 2020) by Imatest engineers are now available. (more…)
Imatest introduces its new Collimator Fixture, which can test your imaging system at distances up to infinity — all within the limited space of a test lab.
Imatest developed this relay lens system for R&D to help its customers test at hyperfocal distances within a limited space. (more…)