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This paper describes a novel 3 dimensional color measurement system. After the sensors and corresponding data processing board were presented, based on a calibration board with right-angled triangle outline, two calibration algorithms are presented to obtain the extrinsic parameters for sensors. One is the calibration algorithm between 2 dimensional laser range finder (2D LRF), the other is for 2D...
A calibration algorithm between 2 dimension laser range finder (2D LRF) and platform was described in this paper for the color measurement system. A calibration board with right angle outline was designed to improve the calibration precision based online feature. The result parameters were obtained through solving the constrain equations by the correspond data between 2D LRF and the platform. The...
In view of the complex background in the weed detection, the research used the H component under HSI the color model to divide the soil background. Considered the real-time operation, it used the automatic threshold value segmentation method, and carried on the suitable erosion and dilation, realized the weed area and the background area segmentation. The result indicated that it was possible of using...
Based on the sharing features of a variety of license plates (LP), the vertical edge was first detected by Sobel edge detector. Then, some approaches were adopted to remove the invalid edge regarding the characteristics of edge grayscale jump and edge density, so that the regions having features of LP were preserved. Next, by horizontal and vertical projections and mathematical morphology (MM) operation,...
With DICOM, information of patient can be stored with the actual images. Content-based access to medical images for supporting clinical decision-making has been proposed to ease the management of clinical data. The paper presents a method of medical image retrieval based on color-texture correlogram and GIT model for endoscopic images. First we define a new image feature called color-texture correlogram...
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