Image Quality Assessment for Photographic Images
نویسنده
چکیده
A large scale psychophysical experiment was carried out to judge the perception of image quality of the photographic images. Two types of experiments, pair comparison and categorical judgment, were conducted for evaluating image difference and absolute quality respectively. Test images were generated by rendering the eight selected original images according to the change of lightness, chroma, contrast, sharpness and noise attributes. A total number of 288 rendered images were used as test images. The experimental results were used to calculate z-scores to verify the optimum level for each transform function. Colour difference thresholds for 288 rendered images were calculated based upon CIELAB and S-CIELAB colour difference formulae.
منابع مشابه
Deblocking Joint Photographic Experts Group Compressed Images via Self-learning Sparse Representation
JPEG is one of the most widely used image compression method, but it causes annoying blocking artifacts at low bit-rates. Sparse representation is an efficient technique which can solve many inverse problems in image processing applications such as denoising and deblocking. In this paper, a post-processing method is proposed for reducing JPEG blocking effects via sparse representation. In this ...
متن کاملThe effect of image quality on the assessment of child abuse photographs.
OBJECTIVES Although child abuse pediatricians are frequently asked to evaluate risk of abuse based on photographs, the effect of photographic quality on this process is presently unknown. Photographs of abused children are often taken by professionals without photographic training, and quality varies widely. This article reports the first study of the effect of image quality on clinical assessm...
متن کاملAesthetic Quality Assessment of Photographic Images: A Literature Survey
Aesthetics is a branch of philosophy which deals with the study of emotions in relation to the sense of beauty. Nowadays, there is a tremendous increase in the use of digital images as a means for representing and communicating information. With the considerable increase of consumer photos, evaluating the quality of photos has become a difficult task. People are more interested in photos that a...
متن کاملObject Level Strategy for Spectral Quality Assessment of High Resolution Pan-sharpen Images
Panchromatic and multi-spectral images produced by the remote sensing satellites are fused together to provide a multi-spectral image with a high spatial resolution at the same time. The spectral quality of the fused images is very important because the quality of a large number of remote sensing products depends on it. Due to the importance of the spectral quality of the fused images, its eval...
متن کاملAssessment of the Wavelet Transform for Noise Reduction in Simulated PET Images
Introduction: An efficient method of tomographic imaging in nuclear medicine is positron emission tomography (PET). Compared to SPECT, PET has the advantages of higher levels of sensitivity, spatial resolution and more accurate quantification. However, high noise levels in the image limit its diagnostic utility. Noise removal in nuclear medicine is traditionally based on Fourier decomposition o...
متن کامل