Texture and Color Enhancement Imaging (TXI)

Texture and color enhancement imaging (TXI) is an innovative image-enhanced endoscopy (IEE) developed by Olympus. Its core objective is to enhance the visibility of lesions by improving three vital image factors inherent to white light imaging (WLI): (1) brightness in dark areas; (2) texture, such as subtle surface changes; and (3) color, including slight color variations in the image. To achieve this, TXI applies image processing technology based on the retinex theory [1]. This theory involves decomposing images into two layers based on human visual system characteristics [2]. The first layer represents the scene’s illumination light, while the second layer corresponds to the local contrast in brightness and color.