I\'m working on a Medical app on iOS. The iOS devices just support GL_UNSIGNED_BYTE with GL_LUMINANCE or generally just support 8 bit per component. Now I have some grayscale im
You MUST convert these values in order to show them applying a Window Level.
Grayscale Dicom images do usually have two Data Elements (Dicom fields) containing the values WC (Window Center, Data Element: 0028,1050) and WL (Window Level, Data Element: 0028,1051). These values define the linear equation necessary to display the information contained in the image.
You can find a more detailed description about the concept of Window Level here.