human visual system do not have the accuracy that the film industry requires the conventional approach cannot provide a satisfactory solution furthermore this approach relies on the flawed assumption of what constitutes the u201c correct u201d transform an ideal image is not one that produces the u201c mathematically correct u201d response but one that is deemed by the artist to be u201c perceptually correct u201d for example in the traditional numerical simulation approach the final transform is rigidly defined and cannot be adjusted to an end user bias if an artist views the color simulation and requests the model to be u201c tweaked u201d such as u201c make the midtones warmer u201d it is very difficult to use traditional 3 d lut interaction models to achieve the desired results in one implementation of the present invention the artist uses the highly accurate color judgment ability to view compare and produce a u201c perceptually correct u201d match 104 between the digital projection 126 produced in the digital image rendering pipeline 120 and the test film projection 136 produced in the traditional film pipeline 130 the production of the u201c perceptually correct u201d match 104 includes a feedback to the user interface loop 110 to allow the artist to interactively manipulate the 3 d lut color transform 112 until a substantial match of.