Results 241 to 250 of about 161,988 (290)
Some of the next articles are maybe not open access.
Analysis of the efficiency of the census transform algorithm implemented on FPGA
Microprocessors and Microsystems, 2015Over the course of the last two decades, continuous advances in the stereo vision field have been documented. In this paper we present an analysis of the efficiency for the stereo vision algorithm of the Census Transform algorithm. In addition to the conventional correlation method based on Hamming distance minimization, we use two similarity measures:
Mario-Alberto Ibarra-Manzano
exaly +2 more sources
A modified census transform using the representative intensity values
2015 International SoC Design Conference (ISOCC), 2015In the census transform, hamming weight calculation is an important process because the hamming weight is the criterion for finding the similarity between stereo images. If the intensity value of a center pixel is changed by different illumination of two cameras, erroneous hamming weight calculation can happen.
Byungin Moon
exaly +2 more sources
Face detection with the modified census transform
Sixth IEEE International Conference on Automatic Face and Gesture Recognition, 2004. Proceedings., 2004Illumination variation is a big problem in object recognition, which usually requires a costly compensation prior to classification. It would be desirable to have an image-to-image transform, which uncovers only the structure of an object for an efficient matching. In this context the contribution of our work is two-fold.
Bernhard Fröba, Andreas Ernst
openaire +1 more source
Weighted census transform for feature representation
2013 10th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2013This paper presents a new visual feature representation method called the weighted census transform (WCT) based on modified census transform (MCT) and entropy information of training dataset. The proposed feature representation model can offer robustness to represent the same visual images such as MCT feature and sensitivity to effectively classify ...
Sungmoon Jeong +3 more
openaire +1 more source
Confidence-based camera calibration with modified census transform
Multimedia Tools and Applications, 2020Most camera calibration methods assume that the camera is nearly in-focus for precisely estimating the intrinsic and extrinsic camera parameters. However, the camera is generally out-of-focus in real calibration applications. This paper presents a method that is capable of accurately calibrating an out-of-focus camera.
Qicong Dong, Lei Wang 0025, Jieqing Feng
openaire +1 more source
Hyperspectral change detection by multi-band Census Transform
2014 IEEE Geoscience and Remote Sensing Symposium, 2014Hyperspectral imaging provides increased capability for many image processing tasks with respect to standard imaging systems. One of such tasks in hyperspectral image processing is change detection, which aims to detect the differences occurring between images acquired from the same scene at different times.
Davut Çesmeci +4 more
openaire +3 more sources
Efficient Parallel Circuits for Census Transform
AIP Conference Proceedings, 2008This paper describes a new circuit that minimizes the number of operations needed to execute the Census transform on 256 grey‐level images. The proposed architecture is modular and easily scalable. It can elaborate images with different resolutions and allows regular slice‐based layouts to be achieved, thus ensuring also a low design complexity.
Stefania Perri +4 more
openaire +1 more source
Unbounded Sparse Census Transform Using Genetic Algorithm
2019 IEEE Winter Conference on Applications of Computer Vision (WACV), 2019The Census Transform (CT) is a well proven method for stereo vision that provides robust matching, with respect to object boundaries, outliers and radiometric distortion, at a low computational cost. Recent CT methods propose patterns for pixel comparison and sparsity, to increase matching accuracy and reduce resource requirements.
Carl Ahlberg +3 more
openaire +1 more source
Motion Segmentation with Census Transform
2001This paper presents a new approach to motion segmentation. Unlike most other methods, the proposed approach relies on summarized local image structure obtained by census transform, and not on absolute luminance values. We apply census transform for two frames from the sequence which are registered to the sub-pixel accuracy regarding to the moving ...
Kunio Yamada +3 more
openaire +1 more source
Color invariant census transform for stereo matching algorithm
2013 IEEE International Symposium on Consumer Electronics (ISCE), 2013Illumination and color invariance are important problems in computer vision (CV). The Census transform (CT) can resist change of illumination intensity and is widely used for many applications in CV and consumer electronics. However, only grayscale images can be processed in the CT algorithm. In this paper, a new color Census transform (CCT) based on a
Soo-Chang Pei, Yu-Ying Wang
openaire +1 more source