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...

On the basis of the general character and operation of the process of perception, a formalism is sought to mathematically describe the subjective or abstract/mental process of perception. It is shown that the formalism of orthodox quantum theory of measurement, where the observer plays a key role, is a broader mathematical foundation which can be adopted to describe the dynamics of the subjecti...

One of the most difficult aspects of any new human-machine interface development is that of evaluating the user’s subjective reaction to the system. In some cases, fears about the usability of a new technology may actually prevent its approval for use due to the perception of potential risk. This is especially true in the automotive industry where driver interface design directly affects safety...

This study aimed to determine differences in speech perception and subjective preference after upgrade from the FSP coding strategy to the FS4 or FS4p coding strategies. Subjects were tested at the point of upgrade (n=10), and again at 1-(n=10), 3-(n=8), 6-(n=8) and 12 months (n=8) after the upgrade to the FS4 or FS4p coding strategy. In between test intervals patients had to use the FS4 or FS4...

A major challenge for the brain is to extract precise information about the attributes of tactile stimuli from signals that co-vary with multiple parameters, e.g., speed and texture in the case of scanning movements. We determined the ability of humans to estimate the tangential speed of surfaces moved under the stationary fingertip and the extent to which the physical characteristics of the su...

In this paper, we proposed an approach of imagery-based image retrieval considering individual’s subjective perception. By using eigen SGLD (Space Gray Level Dependence) matrices, the statistical and textural features of images were extracted, the associations between these features and semantic features based on human visual perception were analyzed, and the mapping models were designed to bri...

The perception of motion in the visual field, when recognized as a psychological problem instead of something self-evident, is often taken to present the same kind of problem as the perception of color or of form. Movement is thought to be simply one of the characteristics of an object, and the only question is "how do we see it?" Actually, the problem cuts across many of the unanswered questio...

In general hearing tests are necessary to assess the properties of spatialisation systems. To speed up the procedure of testing different system parameters an objective model of localisation in binaural sound reproduction system is introduced [7]. In the following the localisation properties of an auditory system based on playback via head phones is investigated. Therefore a new design for the ...

Two objective measurement techniques have been proposed that relate the fluctuations in interaural time difference to one or more attributes of subjective spatial perception. This paper reviews these measurements, discusses how these fluctuations may be created in a real acoustical environment, summarises the experiments carried out to elicit the subjective effect of the fluctuations, and sugge...