It relates to improve apparatus and method based on the exchange of perceived illumination intensity nonlinear view data between different display capabilities.A kind of hand-held imaging device has data sink, and it is configured to receive reference encoder view data.Described data include by the identifying code value of outside decoding system coding.Described identifying code value represents reference gray level level, and these reference gray level levels are chosen with reference to GTG explicit function for the perception of spatial frequency is nonlinear by using human vision based on the level that is suitable to not share the same light.Described imaging device also has data converter, and it is configured to access the code mapping between identifying code value and the device particular code value of this imaging device.Device particular code value is configurable to generate the gray level specific to imaging device.Based on code mapping, it is the device special image data with device particular code value coding that data converter is configured to reference encoder view data transcoding.