METHOD FOR CONTROL OF AUTO EXPORURE USING HISTOGRAM

摘要

The present invention includes the steps of the back light and that for providing an automatic exposure method which can effectively compensate for the excessive front optical phenomenon, the present invention to achieve this, calculates the luminance value of the pixel in the image frame; Calculating a ratio of the average brightness value ratio of a di stunt ratio of the number of pixels having a long value to the ratio of the pixel using the luminance histogram that has a value close to an average value near the luminance; Calculating a degree of near-by the ratio of the near and calculates the degree of de-instant by using the ratio of the de stunt; Calculating a degree of the histogram by using the level of the de stunt and extent of the near; The step of calculating the back of the light level using a level of brightness difference and the degree of the histogram of; Calculating a transitional front light using the degree of accuracy and the histogram of the brightness difference; And the back light level and comparing the magnitude of the transient degree front light, and provides the automatic exposure control of the image comprises the step of variably applied to the reference values ​​of the automatic exposure method based on the result.