This paper presents a method for estimating disparity images from a stereo image sequence. While many existing stereo algorithms work well on a single pair of stereo images, it is not sufficient to simply apply them to temporal frames independently without considering the temporal consistency between adjacent frames. Our method integrates the state-of-the-art stereo algorithm with the scene flo...

We introduce a method to jointly estimate the BRDF and geometry of an object from a single image under known, but uncontrolled, natural illumination. We show that this previously unexplored problem becomes tractable when one exploits the orientation clues embedded in the lighting environment. Intuitively, unique regions in the lighting environment act analogously to the point light sources of t...

The development of rapid prototyping has evolved from the crude milled models to the laser polymerised stereolithographic models of excellent accuracy. The technology was advanced further with the recent introduction of fused deposition modelling and the 3-dimensional ink-jet printing technique in stereo-model fabrication. The concept of using a 3dimensional model in planning the operation has ...

Rain spots on green plum are superficial micro-defects. Defect detection based a two-dimensional image is easily influenced by factors such as placement position and light prone to misjudgment omission, which the main problems affecting accuracy of defect screening plum. In this paper, using computer vision technology, an improved structure from motion (SFM) patch-based multi-view stereo (PMVS)...

Defect size distributions play an important role in process characterization and yield prediction. To determine efficient procedures to extract defect size distributions, a data base was set up that consists of hundreds of defect images to provide defect size distributions also reflecting irregular outlines of defects. Further investigation results that even a single extension value per defect ...

In this paper we show how to estimate facial surface reflectance properties (a slice of the BRDF and the albedo) in conjunction with facial shape from a single image. We show how an estimate of the surface reflectance function can be made by fitting a curve to the scattered and noisy reflectance samples provided by the estimated shape. We present a novel statistical face shape constraint which ...

It is very important to guarantee the quality of the industrial products by means of visual inspection. In order to reduce the soldering defect with terminal deformation and terminal burr in the manufacturing process, this paper proposes a 3D visual inspection system based on a stereo vision with single camera. It is technically noted that the base line of this single camera stereo was precisel...

In this paper, we present a new stereo matching algorithm using global and local color segmentation. After we perform a quad-tree decomposition to generate global and local color segments, we determine meaningful depth information between global and local disparities based on the disparity space distribution. Unlike the previous segment-based stereo matching methods, we consider globality and l...