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Image processing includes many various procedures and one of the mostly used is edge detection. Sometimes is desirable to improve precision of edge detector to sub-pixel range. In our paper we deal with precise localization of edge which is moving during the exposure time. For such the edges we tested three edge detectors with sub-pixel precision in 1-D images: algorithm that uses function erf to...
High performance pixel design for 550Ke full well capacity, 10µm pixel pitch and 65dB dynamic range is challenging on typical CMOS process. In general silicon processes are un-optimized for critical optical parameters. Therefore, the spectral response and photo-sensitive simulation are the immediate requirements. This paper highlights a methodology for high performance imaging pixel design in a typical...
The method of edge detection based on the sharpen control filter to the maximum marginal curve's inclination has been developed. The mode of operation of the proposed method has been described, examples of processing medical images, including X-ray images and images obtained by capillaroscopy have been provided; a comparative analysis of the treatment effect has been made.
This paper deals with a method of clipping a line segment into a circular window. Its unlike other algorithms, instead of dividing region into segments and generating the corresponding region codes, yields results based their parametric equations which not only yields precise result for each pixel but also compute faster. Its an algorithm that can be embedded in many circular displays in order to...
Classification of Land Use Land Cover (LULC) data from satellite images is extremely remarkable to design the thematic maps for analysis of natural resources like Forest, Agriculture, Water bodies, urban areas etc. The process of Satellite Image Classification involves grouping the pixel values into significant categories and estimating areas by counting each category pixels. Manual classification...
Segmentation is the pre-processing step of the various video processing applications like compression, foreground and background segmentation etc. It is a method of partitioning a video into uniform regions. Oct tree segmentation method which is explained in this paper assumes video as a cube and segments entire video cube into eight shorter size video cube. Segmentation has been formulated with the...
We report on a vision sensor architecture relying on a pixel-embedded memristive device to perform dynamic background subtraction as basic image processing components, aimed at detecting anomalous events in the scene. A Light-To-Frequency Converter generates digital pulses, which are linearly proportional with the light intensity. During the exposure time, a certain number of pulses, with proper width...
This paper presents a new architecture and circuit design for colour x-ray pixel array detector read-out electronics, based on two circuit designs; the Bayer method of pixel arrangement and the full energy and special resolution circuit design, a simulation of the sub sampling architecture was made in MATLAB Simulink and the results shows that the propose architecture produces images with an image...
Image Histogram is useful in wide range of applications, it shows the image intensity distribution which is used in many image processing techniques. The processing time is very critical in real time applications, so the optimized and robust techniques are preferred. This paper is discussing a simple method for calculating histogram of the image with sampled Histogram which is similar to the histogram...
In order to minimize the processing time and maintain the color palette, simplify the processing of, our research category the available colors into primary color the colors from the photographic processing by Error Diffusion, the research will use the color space HSL as color model to build the error diffusion application which designed for available and limited colors to making fine arts such as...
In this paper is presented a High Dynamic Range (HDR) extension technique that applies to an imager without modifying any of its other specifications (as speed, noise floor or pixel scheme). The technique relies on the division of the focal plane into blocks that are able to choose the integration time from a set of eleven exposures, reaching +60db extension compared to a standard CMOS imager. The...
The description of a way of contactless measurement of the module and a component of a vector of vibromovement of a point is given in a range microwave oven antenna mirror surface by the automatic analysis of geometrical parameters of a trace of vibration degradation of a round tag which center coincides with this point.
The paper suggests a twelve-angle pixel model for anti-aliasing purposes. Additional evaluation functions had been used to identify the intensity of pixel color. The functions can be calculated independently. For the realization of anti-aliasing on hardware a structure of a device is suggested.
A new approach blends a new camera architecture based on a digital micro-mirror device with the new mathematical theory and algorithms of compressive sampling. The “single-pixel” compressive digital camera functions by the method of focussing the desired image onto a digital micro-mirror device (DMD) consisting of an array of N tiny mirrors. Camera architecture employs a digital micromirror array...
Compression mechanisms for image search redundancies in the image data. This redundancy may occur in neighboring pixel values or the pixels found anywhere in the image. Moreover the redundancies may be at pixel level or at block level. There are a number of image compression mechanisms available. The paper compares some of these image compression mechanisms along with some compression parameters and...
White LED offers advantageous properties such as high brightness, low power consumption and long lifetime. While the use of white LEDs for communication has been proposed, but it is very difficult to install many such “visible light communication” solutions in public places because of high cost of the specialized components required to assemble these solutions. This paper demonstrates an end to end...
Template matching is widely used in image processing. In symmetric normalization both the compared vectors are normalized in same way, and in filter design, only the template is modified and then is correlated with the reference image. The above mention is a problem from, to overcome this we moved to asymmetric correlation. Noise reduction in image using asymmetric correlation by template matching,...
The digital image data transmission and storage in today's cyberspace has increase with privacy and security concerns. Digital media collected from different sources such as surveillance systems, forensic databases, medical images are very sensitive hence security concerns regarding the safe transmission and authentication of such digital data across secured and unsecured communication channels needs...
With the advent of numerous remote sensing sensors available for the researcher, the fusion of digital image data has become a imperative tool for classifying remote sensing image and evaluation too. Remote sensing image fusion not only improves the spatial resolution of the original multispectral image, but also improves the spectral quality of merged product. Quantitative and qualitative digital...
This paper presents a method for depth measurement based on Speeded Up Robust Features (SURF) and pixel number variation of CCD Images. A single camera is used to capture two images in different photographing distances, where features in the images are extracted and matched by SURF. To remove false matching points, an Identifying point correspondences by Correspondence Function (ICF) method is adopted...
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