1. A method, comprising, selecting a biological tissue area for investigation in patients with a diabetic foot ulcer; scanning the biological tissue area for investigation under a medical hyperspectral imaging device; collecting a 2D medical hyperspectral image (MHSI) of the biological tissue area under investigation; converting the 2D MHSI to a color image as a red blue and green (RGB) image of the biological tissue area under investigation, wherein a red, green, and blue band value is selected from the visible spectrum of 2D MHSI followed by predicting a luminance matrix for each band value; calculating luminance to be displayed for each band value by applying a scaling transformation; and producing a single color image depicting red, green, and blue components of the visible spectrum wherein the 2D MHSI is converted to the RGB image by a XYZ to RGB matrix transformation using: 
 sRGB ( i,j )= XYZ _ sRGB ( M lmap ( i,j ,λ)); and wherein the scaling transformation is via a linear mapping using a M, the linear mapping function applies the linear transformation to its elements for the M lmap ⁡ ( i , j ) = M ⁡ ( i , j ) - M m ⁢ ⁢ i ⁢ ⁢ n M ma ⁢ ⁢ x - M m ⁢ ⁢ i ⁢ ⁢ n wherein MHSI matrix, M, is calculated by applying linear transformation to the three bands red (i,j), green (i,j), and blue (i,j); and visualizing the RGB image to characterize the biological tissue under investigation.