Traditional methods for computing optical flow are mainly based on image brightness constancy. In the real world the brightness constancy usually does not hold. Here we present the idea of using invariant feature based on the brightness change model to estimate the optical flow. Both the mathematical derivation and the experiments show that the new model is better than brightness based optical ...

Previous literature suggests that structural and expressive cues affect the emotion expressed in music. However, only a few systematic explorations of have been done, usually focussing on or limited amount predetermined arbitrary cue values. This paper presents three experiments investigating effect six their combinations music's perceived emotional expression. Twenty-eight musical pieces were ...

Coherent oscillations have been observed during thermonuclear (Type I) X-ray bursts from 14 accreting neutron stars in low mass X-ray binaries, providing important information about their spin frequencies. However, the origin of the brightness asymmetry on the neutron star surface producing these oscillations is still not understood. We study the stability of a zonal shearing flow on the neutro...

A westward-propagating Rossby-like wave signal is found to explain a large fraction of the intraseasonal variance in cloud brightness over Western Hemisphere. series diagnostic criteria suggest that this moisture mode: its anomalies dominate distribution moist static energy (MSE) and are phase with precipitation anomalies; thermodynamic equation obeys weak temperature gradient approximation. Th...

High-gain free-electron lasers (FELs) operating at short wavelengths have the potential to gather incredibly detailed information on how matter interacts and arranges itself at the atomic and molecular scales [1]. If high brightness pulses of sufficiently short duration ( 10 − 10s) and power can be generated, it may also be possible to capture ephemeral events, such as molecular bond formation,...

BACKGROUND AND STUDY AIMS The novel method of image-enhanced endoscopy (IEE) named blue laser imaging (BLI) can enhance the contrast of surface vessels using lasers for light illumination. BLI has two IEE modes: high contrast mode (BLI-contrast) for use with magnification, and bright mode (BLI-bright), which achieves a brighter image than BLI-contrast and yet maintains the enhanced visualizatio...

In this paper, a fast motion compensation algorithm is proposed that improves coding efficiency for video sequences with brightness variations. We also propose a cross entropy measure between histograms of two frames to detect brightness variations. The framewise brightness variation parameters, a multiplier and an offset field for image intensity, are estimated and compensated. Simulation resu...

A model of brightness coding is presented which is shown to predict the appearance of a number of classical brightness phenomena. The model is known as MIDAAS which stands for Multiple Independent Descriptions Averaged Across Scale. In common with many other approaches to brightness perception MIDAAS imputes to local feature detectors a central role in the computation of brightness. It also exp...

Low surface brightness galaxies, those galaxies with a central surface brightness at least one magnitude fainter than the night sky, are often not included in discussions of extragalactic gas at z < 0.1. In this paper we review many of the properties of low surface brightness galaxies, including recent studies which indicate low surface brightness systems may contribute far more to the local HI...