utils

Documentation

Index

• func GetGrayMatrix(img image.Image) [][]uint8
• func LoadImage(path string) (image.Image, error)
• func SaveImage(img image.Image, path string) error

Functions

func GetGrayMatrix

func GetGrayMatrix(img image.Image) [][]uint8

GetGrayMatrix converts an arbitrary image into a 2D grid of 8-bit grayscale values. This is used as the raw input for most steganalysis algorithms.

func LoadImage

func LoadImage(path string) (image.Image, error)

LoadImage opens a file from the disk and decodes it into an image.Image. It supports JPEG, PNG, and BMP formats via side-effect imports.

func SaveImage

func SaveImage(img image.Image, path string) error

SaveImage encodes and saves an image to the specified path. The format is determined by the file extension (.png, .jpg, .bmp).

Quality settings:

• JPEG: Quality 90
• BMP/PNG: Default settings