Method and device for enhancing night vision image in self-adaption mode

[0036] refer to figure 1 , figure 1 It is a schematic flowchart of an embodiment of a method for adaptively enhancing night vision images in the present invention.

[0037] In the first embodiment, the method for adaptively enhancing night vision images includes:

[0038] Step 101, obtaining the initial value of the luminance field of the low-illuminance image;

[0039] Specifically, the initial value L(x,y)=max of the brightness field of the low-illuminance image is acquired 3×3 (I r , I g , I b ), first obtain the maximum value of the RGB three channels of a single pixel in the entire image, and then obtain the maximum value within the 3X3 frame range of the pixel.

[0040] Step 102, obtaining a transmittance restoration function according to the initial value;

[0041] Specifically, the transmittance repair function is obtained according to the initial value Re ( x , y ) =

[0060] refer to image 3 , image 3 It is a schematic diagram of functional modules of an embodiment of a device for adaptively enhancing night vision images in the present invention.

[0061] In the second embodiment, the device for adaptively enhancing night vision images includes:

[0062] The first acquiring unit 301 is configured to acquire an initial value of the brightness field of the low-illuminance image;

[0063] Specifically, the initial value L(x,y)=max of the brightness field of the low-illuminance image is acquired 3×3 (I r , Ig ,I b ), first obtain the maximum value of the RGB three channels of a single pixel in the entire image, and then obtain the maximum value within the 3X3 frame range of the pixel.

[0064] The second acquiring unit 302 is configured to acquire a transmittance restoration function according to the initial value;

[0065] Specifically, the transmittance repair function is obtained according to the initial value Re