Unsharp masking is a spatial domain image enhancement technique that sharpens the edges of an image by subtracting a blurred version of the image from the original image.

Histogram equalization is a technique used to enhance the contrast of an image by redistributing the intensity values of the pixels in the image.

Fourier transform is a frequency domain image enhancement technique that converts an image from the spatial domain to the frequency domain, where various operations can be performed to enhance the image.

Unsharp masking is a technique used to sharpen the edges of an image by subtracting a blurred version of the image from the original image.

Principal component analysis is a multispectral image enhancement technique that transforms a set of correlated bands into a set of uncorrelated bands, which can be used to reduce the dimensionality of the data and enhance the interpretability of the image.

Principal component analysis is a technique used to reduce the dimensionality of a multispectral image by transforming a set of correlated bands into a set of uncorrelated bands.

Median filter is a noise reduction image enhancement technique that replaces each pixel with the median value of its neighboring pixels.

Median filter is a technique used to reduce the noise in an image by replacing each pixel with the median value of its neighboring pixels.

Dark channel prior is a haze removal image enhancement technique that estimates the atmospheric haze using the dark channel prior and then removes the haze from the image.

Dark channel prior is a technique used to remove the haze from an image by estimating the atmospheric haze using the dark channel prior.

Color balance is a color image enhancement technique that adjusts the color balance of an image by adjusting the levels of the red, green, and blue channels.

Color balance is a technique used to adjust the color balance of an image by adjusting the levels of the red, green, and blue channels.

Brovey transform is a pan-sharpening image enhancement technique that merges a high-resolution panchromatic image with a low-resolution multispectral image to create a high-resolution multispectral image.

Pan-sharpening is a technique used to merge a high-resolution panchromatic image with a low-resolution multispectral image to create a high-resolution multispectral image.

Wavelet transform is an image fusion image enhancement technique that decomposes the source images into a set of wavelet coefficients, which are then combined to create a fused image.

Image fusion is a technique used to combine two or more images into a single image, which can be used to enhance the information content of the resulting image.