On the research of traditional diopter measuring method with dioptrometer, a new approach for automatic testing of diopter is proposed. The new way took place of hand operation of dioptrometer by high resolution camera and improved mountain climbing algorithm of rapid autofocus combining rough and fine adjustment. It can improve testing efficiency and accuracy from ±0.2 diopters to ±0.008 diopters which can meet the need of accuracy and efficiency for flow line of production.
Subjective and statistical methods were applied to evaluate the effect of fusion vision system which was lack of objective, convenient, engineering methods. Based on testing of resolution for night version system and MRTD for IR system, a evaluation method of fusion resolution was improved for fusion night vision system with the testing instrument of fusion resolution.
Blooming is a normal phenomenon in the measurement of low light level television (LLL TV) due to its inner auto-gain
control, which will influence the test result and should be controlled in the measurement process. Analyzing the
blooming principle, a solving method was improved by increasing the ambient illumination on the sense of LLL TV,
which will decrease the auto-gain value of LLL TV. What’s more, this method was validated in an experiment of
resolution measurement of LLL TV by the applying an auxiliary lighting equipment. The auxiliary light equipment was
composed with three ground glasses, twelve LED lamps, and a box brushed with diffuse materials inside. The color
temperature of LED lamps was 3000K whose value is close to the light source (2856K) of resolution measurement.
During the experiment, auxiliary light equipment was placed in front of the LLL TV. By analyzing the output image of
the LLL TV, the blooming phenomenon disappeared and the covered resolution image appeared. The result means that
the method of increasing the ambient illumination on the sense of LLL TV is an effective way to depress the blooming in
measurement of LLL TV, and it can be used to other parameter measurement of LLL TV.
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