Subjective Evaluation of an Edge-based Depth Image Compression Scheme
2013 (English)In: Proceedings of SPIE - The International Society for Optical Engineering: Stereoscopic Displays and Applications XXIV, SPIE - International Society for Optical Engineering, 2013, Art. no. 86480D- p.Conference paper (Refereed)
Multi-view three-dimensional television requires many views, which may be synthesized from two-dimensional images with accompanying pixel-wise depth information. This depth image, which typically consists of smooth areas and sharp transitions at object borders, must be consistent with the acquired scene in order for synthesized views to be of good quality. We have previously proposed a depth image coding scheme that preserves significant edges and encodes smooth areas between these. An objective evaluation considering the structural similarity (SSIM) index for synthesized views demonstrated an advantage to the proposed scheme over the High Efficiency Video Coding (HEVC) intra mode in certain cases. However, there were some discrepancies between the outcomes from the objective evaluation and from our visual inspection, which motivated this study of subjective tests. The test was conducted according to ITU-R BT.500-13 recommendation with Stimulus-comparison methods. The results from the subjective test showed that the proposed scheme performs slightly better than HEVC with statistical significance at majority of the tested bit rates for the given contents.
Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2013. Art. no. 86480D- p.
Depth image compression, view synthesis, subjective test
IdentifiersURN: urn:nbn:se:miun:diva-18539DOI: 10.1117/12.2003053ISI: 000322737100011ScopusID: 2-s2.0-84878743350Local ID: STCISBN: 978-081949421-4OAI: oai:DiVA.org:miun-18539DiVA: diva2:608481
24th IS and T/SPIE Stereoscopic Displays and Applications Conference, SD and A 2013; Burlingame, CA; United States; 4 February 2013 through 6 February 2013; Code 97281