Digital and analogue printing methods are studied for reconstructing a Mayan decorative relief from the ancient temple of the Jaguars. Height maps, image files encoding height information as intensity values, were produced in commercial image editing software from early 20th century photographic records. Physical height was generated in different materials through analogue printing processes including casting and embossing from photo exposed polymer plates, and digital processes including 2.5D elevated printing and stereolithography. The surface geometry of the outcomes from the analogue processes was recorded using photometric stereo to obtain feedback on the translation of the grayscale range onto relief. 2.5D prints produced with Canon Elevated Printing and stereolithography were used for comparison and qualitive assessment. Differences, parallels and sustainability of the processes are discussed.
Quality assessment is performed through the use of variety of quality attributes. It is crucial to identify relevant attributes for quality assessment. We focus on 2.5D print quality assessment and its quality attributes. An experiment with observers showed the most frequently used attributes to judge quality of 2.5D prints with and without reference images. Colour, sharpness, elevation, lightness, and naturalness are the top five the most frequently used attributes for both with and without reference cases. We observed that content, previous experience and knowledge, and aesthetic appearance may impact quality judgement.