Background model updating is a vital process for any background subtraction technique. This paper presents an updating mechanism that can be applied efficiently to any background subtraction technique. This updating mechanism exploits the color and spatial features to characterize each detected object. Spatial and color features are used to classify each detected object as a moving background o...

In this paper we address the problem of appropriate modelling of shadows in color images. While previous works compared the different approaches regarding their model structure, a comparative study of color models has still missed. This paper attacks a continuous need for defining the appropriate color space for this main surveillance problem. We introduce a statistical and parametric shadow mo...

In this paper we introduce a novel approach of foreground-background-shadow separation. Our method tries to extract the accurate silhouettes of foreground objects even if they have partly background like colors and shadows are observable on the image. It does not need any a priory information about the shapes of the objects, it assumes only they are not point-wise. The method exploits temporal ...

In this paper, we exploit robust depth information with simple color-shape appearance model on single object tracking in crowd dynamic scenes. Since binocular video streams are captured from a moving camera rig, background subtraction cannot provide a reliable enhancement of region of interest. Our main contribution is a novel tracking strategy to employ explicit stereo depth to track and segme...

The Punch locus of Drosophila melanogaster which encodes the pteridine biosynthetic enzyme, GTP cyclohydrolase, is genetically complex. Lethal alleles of the locus resolve into an array of interallelic complementation groups, and at least one class of mutations is developmentally specific, affecting GTP cyclohydrolase activity only in the heads of adults. All previously isolated Punch alleles w...

There are various methods in the field of moving-object tracking in the video images that each of them implies on the specific features of object. Among tracking methods based on features, algorithms based on color are able to provide a precise description of the object and track the object with high speed. One of the efficient methods in the field of object tracking based on color information ...

Characteristics of mating behavior in Drosophila melanogaster have been well-described, but the genetic basis for male-female mating success is largely unknown. Here we show that the white (w) gene, a classical eye color gene, is associated with mating success. 81.3 % of wild-type flies copulated within 60 minutes in the circular arenas, whereas few white-eyed mutants mated successfully. The w+...

In this paper, it is proposed an improved method to aim at the illumination vary problem for detecting illegal parking in the surveillance video. The method uses a frame to frame subtraction method for modeling the background, and update it, then using the background subtraction method to get the moving candidates, it can obtain the accurately moving objects after appropriate processing. At the...