An image attention model and its application to image quality assessment are discussed in this paper. The attention model is based on rarity quantification, which is related to self-information to attract the attention in an image. It is relatively simpler than the others but results in taking more consideration of global contrasts between a pixel and the whole image. The visual attention model...

Among various image fusion methods, principal component analysis (PCA) technique is capable of quickly merging the massive volumes of data. For IKONOS imagery, PCA can yield satisfactory “spatial” enhancement but may introduce spectral distortion, appearing as a change in colors between compositions of resembled and fused multi-spectral bands. To solve this problem, a fast improved PCA fusion m...

Natural images contain a lot of information imperceptible to the human eye. While it is of key importance to maintain the visible information in image reproduction processes, the imperceptible information can, with good benefit, be discarded. In order to identify the imperceptible information, a method for simulating this particluar aspect of the human visual system is required. In this paper w...

Image quality assessment (IQA) is a complex problem due to subjective nature of human visual perception. Human have always seen the world in color. The widely objective metrics used are mean squared error (MSE), peak signal to noise ratio (PSNR), and human visual system based on structural similarity and edge based similarity. The problem of these objective metrics that they evaluate the qualit...

due to problems in storage, transport and price fluctuation of fresh potato, production of ready-to-use products like french fries is of particular importance.one of the important steps in product processing is pre-drying.sticks with 0.8*0.8*8 cm dimensions were prepared, blanched with hot water at 75°c for 10 minutes and dried at four different air temperatures of 50, 60, 70 and 80°c to moistu...

AIM The aim was to develop an indicator sensor for real-time monitoring of meat quality and to compare the response of indicator sensor with meat quality parameters at ambient temperature. MATERIALS AND METHODS Indicator sensor was prepared using bromophenol blue (1% w/v) as indicator solution and filter paper as indicator carrier. Indicator sensor was fabricated by coating indicator solution...

We investigate the display of color image sequences using a model-based approach to multilevel error di usion. We extend Bouman and Kolpatzik's technique [1] for design of an optimal lter to the temporal dimension. Our model for the human visual system accounts for the spatial and temporal frequency dependence of the contrast sensitivity of the luminance and chrominance channels. We observe an ...

This paper describes and compares two color spaces – YUV and RGB, taking into account possible human-computer interaction applications. Human perception-oriented properties are compared, including not only file size or bandwidth, but also subjective visibility of artifacts. 1700 tests on a group of 170 people were performed to describe the subjective quality of compressed YUV and RGB images. Th...