Dimming method for infrared camera

Abstract

The invention relates to a dimming method for an infrared camera. The method includes the steps: acquiring a target value range of image brightness with the most comfortable image perceptibility and generating the best video streaming perceptibility by testing; acquiring a current value of a brightness value of a frame image; comparing the current value of the brightness value with the target value range of the image brightness, and judging whether the current value of the brightness value exceeds the target value range of the brightness or not; adjusting illumination of an infrared LED (light-emitting diode) lamp if the current value of the brightness value exceeds the target value range of the brightness. Therefore, a value of the image brightness is returned to the target value range of the image brightness. Barrier-free monitoring in 24 hours is achieved, monitoring effects are basically unchanged when the light intensity of an external environment is constantly changed, energy is saved, the service life of the infrared camera is prolonged, and the hidden effect of the infrared camera is improved.

Description

technical field [0001] The invention relates to the technical field of cameras, in particular to a dimming method for an infrared camera. Background technique [0002] At present, infrared cameras have been widely used in various fields. As one of the key components of infrared cameras, the photosensitive element mainly uses its technology of sensing external light signals in space and converting them into image signals to make the picture clear. recorded. However, in fields such as security that need to be monitored 24 hours a day, higher requirements are put forward for the performance of infrared cameras, such as: the infrared camera equipment has inconsistent light intensity such as day and night (or bright and dark places). Under these conditions, excellent monitoring effects are required. For infrared cameras, there are generally better shooting results in daytime with sufficient light, night or dark places with sufficient lighting brightness. However, in an environ...

AI Technical Summary

Problems solved by technology

[0006] However, the installation method of the photoresistor will directly affect the photosensitive effect, because the photoresistor cannot be installed in the middle of the optical lens area. When the photoresistor is installed on the left side of the optical lens area, it cannot sense the light on the right side. The lower side cannot sense the light on the lower side, and the photoresistor can only reflect the change of light that hits the photoresistor, resulting in the change of infrared light intensity, which is often limited in practical applications.

Furthermore, the photoresistor method needs to reserve a photoresistor installation space, and increases the manufacturing cost of the infrared camera device.

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