Explosion flash light supplementing device and method

Abstract

The invention discloses an explosion flash light supplementing device and method. The device comprises a CMOS image sensor and an explosion flash lamp. The explosion flash light supplementing device further comprises a calibration module, a CMOS control module and an explosion flash lamp control module. The calibration module is used for calibrating light sensing parameters of the CMOS image sensor; the CMOS control module is used for setting exposure time according to image brightness, determining light sensing unit column number information corresponding to an RIO according to the target position, issuing the exposure time and the light sensing unit column number information corresponding to the RIO to the explosion flash lamp control module, and issuing the exposure time to the CMOS image sensor; the explosion flash lamp control module is used for working out explosion flash parameters according to the light sensing parameters, worked out by the calibration module, of the CMOS image sensor, the exposure time issued by the CMOS control module and the light sensing unit column number information, issued by the CMOS control module, corresponding to the RIO, and controlling an explosion flash lamp to supplement light. The explosion flash lamp supplements light under control, so that light pollution is hardly caused, and power consumption is small.

Description

technical field [0001] The invention belongs to the technical field of camera supplementary light, and in particular relates to a flash supplementary light device and method. Background technique [0002] CMOS and CCD are commonly used photosensitive elements. CMOS has the characteristics of high integration, simple manufacturing process, low cost, low power consumption, and easy mass production, so it is used in large quantities. CMOS is divided into rolling shutter (Rolling Shutter) and global shutter (Global Shutter) according to the exposure method. The exposure mode of the rolling shutter CMOS is row-by-row exposure, and the start exposure time point and the end exposure time point of each row of photosensitive units inside the rolling shutter CMOS are different. The global shutter CMOS is global exposure, and all the photosensitive units inside it start to receive light at the same time and end at the same time. [0003] The difference in imaging effect between rolli...

AI Technical Summary

Problems solved by technology

However, if the rolling shutter CMOS is used with the constant light, the brightness of the constant light cannot be very high, and the duration of the light is long, which is easy to interfere with the detection target and cause light pollution; at the same time, the constant light also has disadvantages such as high power consumption.

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