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This paper presents an image enhancement and space-variant color reproduction method based on adaptive sigmoid function for endoscopic image. At first, using YCBCR conversion matrix, the color image is separated into luminance and chrominance components. The adaptive sigmoid function with two controlling parameters is applied on the uniformly distributed luminance pixels. The space-variant color reproduction...
This paper presents an efficient color image enhancement method for endoscopic images. The enhancement is achieved in two parts: image enhancement at gray level followed by a color reproduction. The captured RGB endoscopic images are first converted into three 2-D spectral images using a well-known method called FICE (Fuji Intelligent Color Enhancement). Then the image with the maximum entropy is...
This paper presents a simple and efficient color image enhancement method for endoscopic images. The proposed image enhancement method works by two interrelated steps: image enhancement at gray level and color reproduction. At, first, the captured RGB endoscopic image is converted into 2 dimensional gray level spectral images using a well-known method called FICE (Fuji Intelligent Color Enhancement)...
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