Flicker fusion frequency critical value measurement method based on digital set identification

Abstract

The invention relates to a flicker fusion frequency critical value measurement method based on digital set identification. The method comprises the steps that N digital frames shaped like the Chinesecharacter 'ri' are arranged in a background light area which flickers at a set frequency, and each stroke of the digital frames shaped like the Chinese character 'ri' is assigned with a name; ten groups combinations of different frequencies respectively applied to the digital frames shaped like the Chinese character 'ri' are set; the strokes of the digital frame shaped like the Chinese character 'ri' are assigned to each frequency in each group of combinations of different frequencies; each digital frame shaped like the Chinese character 'ri' in the N digital frames shaped like the Chinese character 'ri' selects one group randomly from the ten groups of combinations of different frequencies; values of the frequencies in each group of frequency combinations in the N groups of the frequencycombinations are determined; a tested person identifies digits flickering on the N digital frames shaped like the Chinese character 'ri' in the background light area in the set frequency range; the flicker fusion frequency critical value of the tested person or a final flicker fusion frequency critical value are judged according to the result identified by the tested person. Accordingly, the measurement process is simplified, the high identification distinction degree is guaranteed, and the measurement result is objective.

Description

technical field [0001] The invention relates to a method for measuring a flash fusion frequency critical value. In particular, it relates to a method for measuring the critical value of flicker fusion frequency based on digital set identification. Background technique [0002] Flash fusion means that when the stimulation is not continuous but intermittent, with the increase of intermittent frequency, what we feel is no longer intermittent stimulation, but a scene of continuous stimulation. We see a A series of flashes, when the number of flashes per minute increases to a certain level, the human eye no longer perceives the flashes, but feels a fixed or continuous light. In vision, this phenomenon is called flash fusion. For example: fluorescent lamps that use alternating current, although they flash about 100 times per second, we don't feel that it is intermittent. [0003] The minimum frequency of stimulation that can just cause the sensation of flash fusion (continuous l...

AI Technical Summary

Problems solved by technology

[0006] (1) Adjust 0.1hz each time, indicating that the measurement accuracy is only accurate to 0.1hz, and the accuracy is low;

[0007] (2) The measured person may have a subjective tendency, and the measurement result may be subject to subjective influence;

[0008] (3) When the existing measurement method measures the flash fusion frequency critical value, the frequency is adjusted to 0.1 Hz each time, the measurement time is long, and the subject is prone to fatigue during the long-term measurement process, which affects the measurement effect;

[0009] (4) In the existing flicker fusion frequency critical value measurement method, a cursor that flickers with a fixed frequency is given during each measurement. If you want to speed up the measurement speed, you will increase the number of measurement cursors, which will increase the measurement of the subject itself Load, the measurement process is more complicated, which may affect the measurement effect

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