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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...
This paper presents an agile radiating matrix antenna which is formed by an association of several and identical special radiating elements called ‘pixels’. Those pixels have special properties concerning its radiating apertures. The matrix antenna working principle is based on the equivalent radiating surface approach and not on the classical array approach. The aim of this paper is to show the matrix...
This paper demonstrates an advanced 1.1um pixel backside illuminated CMOS image sensor with a 3D stacked architecture. The carrier wafer in conventional BSI is replaced by ASIC wafer, which contains a part of periphery circuit and is connected to the sensor wafer through bonding technology. With proper layout design and process improvement, the impact of 3D connection (Through Via, TV) on the sensor...
The application of recurrent neural network for image segmentation is considered. The described method allows to perform clustering of the image parameters without the a priori information about the clusters number. Calculation of network parameters for segmentation is discussed. The experiments results of multi-step segmentation are given.
CMOS image sensors transmit images by photoelectric conversion and consist of several key analog circuits. We discuss the structure and the overall operating principles of typical CMOS image sensor, and conduct analysis of the key analog circuits function. We carry out the discussion of the theoretical and mathematical principles of those circuits and then we design certain improved key analog circuits...
For economic reasons, most digital cameras use color filter arrays instead of beam splitters to capture image data. As a result of this, only one of the required three color samples becomes available at each pixel location and the other two need to be interpolated. This process is called Color Filter Array (CFA) interpolation or demosaicing. Many demosaicing algorithms have been introduced over the...
In the paper we introduce three methods for image processing, they are pixel extraction method, memory method and pointer method. With the same condition of data structure and algorithm, the three methods are used in edge detection for the digital images. In order to compare the actual operation efficiency of these three kinds of methods, we use C# to write a Windows Form Application program in the...
A new architecture for Positron Emission Tomography visible-light detectors is presented. The architecture is based on mini-SiPMs (arrays of 32 SPADs), which are locally digitized. With this architecture we expect to achieve a high fill factor while still performing an early enough analog-to-digital conversion so as to avoid interconnect parasitics common of standard SiPMs. The detector is implemented...
We present the concept and realization of a micro plenoptic camera to achieve multiple viewpoint imaging with one single image capture and without moving the camera. The micro plenoptic camera is based on lightfield photography where the camera captures the 4- dimensional lightfield and images it onto a 2- dimensional CCD sensor through the use of a microlens array. The microlens array was fabricated...
A 64-unit Hall-effect sensor array capable of detecting magnetic beads is implemented in 0.18 µm CMOS process. Two Hall sensor implementations, one using n-wells and another using MOS transistors, are analyzed. The n-well implementation can detect a single 4.5 µm bead in .5 ms with a probability of error below 1% while the MOS implementation takes 2.5 ms to detect the same bead. Each array is compact...
This paper presents an on-chip, filter-less fluorescence detector using an all-digital, time-resolved imager based on a CMOS single-photon detector array with limited in situ processing. The device comprises an array of pixels capable of detecting single photons integrated with time gating circuitry and a 1-bit memory. The sensor allows on-chip, filter-less fluorescence detection and fluorescence...
This paper proposes a wireless communication system for secure transmission of data. Bluetooth is used as the wireless communication medium due to its low-cost and low-power consumption features. Advanced encryption standard (AES) protocol is implemented for the security reason over Bluetooth stack. RC10 prototyping board with Xilinx XC3S1500L-4-FG320 device has been used for the hardware evaluation...
In this work, a novel method for realization of a low-cost two-dimensional (2D) display is proposed. This method integrates a one-dimensional (1D) array of solid-state LEDs with 1D polymer scanner. LEDs are electronically modulated with a position sensing circuitry while Fire-Resistant 4 (FR4) scanner is actuated in perpendicular to modulation axis to produce a 2D display consisting of virtual pixels...
In this paper we propose to implement image warping by two projectors. The screen that the images are projected onto is assumed to be the lateral surface of a cylindroid with known lengths of major and minor axes. A blending function that smooths the overlapped projection area is used. The geometric correction model for the convex type of surface is derived. In particular, the model is presented in...
We present an end-to-end system capable of real-time capturing and displaying with full horizontal parallax high-quality 3D video contents on a cluster-driven multiprojector light-field display. The capture component is an array of low-cost USB cameras connected to a single PC. RawM-JPEG data coming fromthe software-synchronized cameras are multicast over Gigabit Ethernet to the back-end nodes of...
The laser beacon power required by a communication terminal for acquisition and tracking in deep space optical link scenarios can be reduced by a factor of 10 to 100 by replacing an integrating array, such as a CCD, with an array of single photon detectors. An additional benefit of the single photon detector array is that each pixel can have MHz bandwidths, allowing simultaneous recovery of photon...
We propose an expanding method for viewing window in the integral floating display with the tilted side mirrors. These additional mirrors make some rays change the propagation direction, and the reflected ray has large propagation angle compared with the conventional system. Because the maximum propagation angle of ray determines the viewing window size, the proposed system can enlarge the viewing...
Most of the current digital cameras feature a single sensor design which limits the number of channels recorded at each pixel location to one. However, a color image is represented with three channels for each pixel. Color Filter Array (CFA) interpolation is the process of generating a full three channel color image from a single channel mosaicked input. We propose a simple edge strength filter to...
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