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PMD camera is an active 3D camera based on TOF principle. This camera can capture intensity image and depth map at the same time and also has advantages of high frame rate, non-scan and independence on ambient light, etc. But the depth data are contaminated by random noise and systematic bias. To solve this problem, this paper analyzes the factors that affect the precision of distance data and presents...
As one of the most important part of the Concentrated Photovoltaic (CPV) system, the tracking accuracy and sensitivity of the solar tracker has a significant influence on the lighting rate and power generation rate of CPV system. The CPV solar tracker based on ARM tracks the sun mainly by using the CMOS sensor. In order to improve the tracking sensitivity, a method of sun spot center orientation based...
We describe the implementation in a self-standing system of a novel contrast-based binary CMOS imaging sensor.This sensor is characterized by very low power consumption and wide dynamic range, which makes it attractive for wireless camera network applications. In our implementation,the sensor is interfaced with a Flash-based FPGA processor,which handles data readout and image processing.This self-standing...
In this paper we present a class of emergent algorithms called Marching Pixels which can be used for real time image processing in smart camera chips. Marching Pixels are based on hardware agents which are virtually crawling in a pixel grid image to find attributes like centroid, rotation and size of an arbitrary number of objects given in an image. Due to the distributed and local processing scheme...
Based on computer image processing, give a new method on helicopter rotors pyramid angle by CMOS -Camera. give a overall design of the system, compare image results with different camera's location and analyze the system's qualitative error. design a synchronized system by external synchronized pulse in order to catch the accuracy image and calculate the blade's height differences by filter and edge...
Edge detection operation is an essential part in the field of image processing. There are few ways to improve the performance of edge detection. This paper proposes a FPGA-based approach Sobel edge detection. An image is captured by a CMOS camera and converted into RGB color space and the image is converted into grayscale to obtain image intensity for edge detection. The proposed Sobel edge detection...
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