Optoelectronic devices based on array image sensors become more popular every year. They are used in science applications, as the machine vision systems and used by customers all over the world for image recording purpose. The quality of the image received by any optoelectronic system depends on several factors and such characteristic as its resolution turns out to be one of the most important. There are several ways to describe the optoelectronic system resolution. One of the most widespread is modulation transfer function. The modulation transfer function measurements could be fulfilled with the help of a method of summation over different frequencies harmonic functions. This method is accurate in the range of Nyquist frequency and closely meets the definition of the modulation transfer function as the harmonic functions are used. It also allows to input necessary frequencies by adding the sinusoid of corresponding frequency to the initial function. In this paper we describe the experiment of optoelectronic system modulation transfer function measurement using the above mentioned method.
There are a number of robotic systems that are used for nuclear power plant maintenance and it is important to ensure the necessary safety level. The machine-vision systems are applied for this purpose. There are special requirements for the image quality of these systems. To estimate the resolution of a video-system one should determine the impact of the system on the special test pattern. In this paper we describe the procedure of determining the number of the modulation transfer function values of the radiation-tolerant machine-vision systems using the test pattern, containing the sum of the harmonic functions of different frequency.
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