Quality Assessment of Sensitometric and Copying Characteristics in the Offset Plate Copy

Diverse techniques based on scientific photography are discussed for use in the evaluation of sensitometric and copying characteristics of offset plates. Advantages as well as disadvantages of extracting selected parameters from analytically fitted sensitometric and copying curves are outlined. In order to avoid approximation errors incurred by applying analytical methods to fit the shape of the characteristic curves, diverse techniques of unsupervised and supervised learning are employed to classify the quality of offset plates.