Improved Retinex Low-light Image Enhancement Algorithm Based on Muti-channel Fusion Strategy

The algorithm first extracts the brightness component Y in the YIQ color space, and enhances it with the Directed filter, and then superimpose them and convert them into grayscale images. finally, the wavelet transform is used to fuse the two images to obtain a new brightness component, which is fused with the I and Q components and then converted back to the RGB color space, so as to obtain an image With high color fidelity and clear details. Expermental results show that this method effectively improves the edge detail information of the image, avoid color distortion, and has a good visual effet.