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In recent years, there has been an increasing growth of using vision-based systems for tracking the players in team sports to evaluate and enhance their performance. Vision-based player tracking has high computational demands since it requires processing of a huge amount of video data based on the utilization of multiple cameras with high resolution and high frame rates. In this paper, we present...
Gesture recognition has lured everyone's attention as a new generation of HCI and visual input mode. FPGA presents a better overall performance and flexibility than DSP for parallel processing and pipelined operations in order to process high resolution and high frame rate video processing. Vision-based gesture recognition technique is the best way to recognize the gesture. In gesture recognition,...
Modern cameras have an image sensor with millions of pixels, among which some of them are inevitably defective (known as hot pixels). Moreover, the number of hot pixels will increase with ageing. colour filter array (CFA) demosaicing will result in colour artifacts caused by these hot pixels. Such artifacts are virtually impossible to remove after demosaicing. In this paper, we propose two effective...
Color space conversion is a basic and vital subject in digital multimedia procession. As VGA increasingly used in different field, it is important to convert video data to the data form that can show on VGA. In this paper, we design and implement a color space conversion system based on FPGA. Camera is used for capturing video then the captured YCbCr video data can be converted to RGB data after going...
This work consists in the design and construction of a line follower robot controlled by a camera connected to a Cyclone IV FPGA in a development board DE0-NANO from the company TERASIC. The camera is a TDRB-D5M. Using computer vision algorithms programmed into the FPGA we are able to guide the robot through a line of one of three possible colors. We follow the line by the use of techniques for masking...
The image-processing pipeline is the core part of any camera system including digital still cameras, camcorders, camera phones and video surveillance equipments. The image-processing pipeline consists of a number of processing stages that enhance the image or remove any effects that are caused by surrounding conditions. These stages are computationally intensive and need special requirements to meet...
Chroma-key is a robust and important technique for processing image or video. This technique gives immersive feedback on Video, TV production and weather forecast. Chromakey method and hardware architecture for Chroma-key effect in real-time using Xilinx system generator is demonstrated in this paper. VLSI architecture is proposed for this method, which is implemented on FPGA based on K-means method...
Tuning the colour thresholds within robot soccer is laborious, and sensitive to changes in illumination. An algorithm for automatic gain control and white balancing within the camera is described. This significantly reduces the effects of the variations in lighting on the thresholds. Next, a new colour space is proposed which maximises the hue separation of the different coloured regions to improve...
This paper presents a new method how to detect a robotic arm's position. The robotic arm has blue squares glued on key parts (on joints). A camera with color detection software can detect the blue squares and this way detecting the whole robotic arm. If we join the detected colored squares with straight lines, we can create the skeleton of the robotic arm. The color detection is made with special...
Camera is an elementary component of the modern systems employed in robotics, defense, surveillance, automation, etc. In order to keep the system compact, embedded camera solutions are developing. A proper system integration requires an effective camera driver. In this context, an efficient FPGA based digital camera driver is devised. The proposed solution is compatible with most of the Omni Vision...
In this paper we present a biologically inspired rotationally-invariant end-to-end recognition system demonstrated in hardware with a bitmap camera and a Field Programmable Gate Array (FPGA). The system integrates the Ripple Pond Network (RPN), a neural network that performs image transformation from two dimensions to one dimensional rotationally invariant temporal patterns (TPs), and the Synaptic...
Communicating by those suffering from motor neuron disease has always been an arduous task. A lot of research has been carried out in finding new methods to assist this section of the society in order for them to freely communicate with the outside world. Though several methodologies exist using electrooculography or video oculography, most methods involve complex algorithms which are slow, power...
In general, a multifunctional image recognition system usually requires a lot of significant resources such as numerous memory components, rapid operation capability of CPU/GPU, image capture device or camera, and display devices/interfaces etc. Most of PC-based image recognition systems can handle complicated image processing. However, for some specific applications, the user will prefer to choose...
The problem of mapping from a high dynamic range image, or a series of images spanning a wide dynamic range, to a standard 8-bit image is considered. Several techniques for dynamic range compression are reviewed. FPGA implementations are developed and demonstrated, with a focus on directly processing the video stream from the camera.
This paper presents a real-time image processing system for a mobile service robot which is implemented by an FPGA reconfigurable logic device. The digital image processing acquired by a CMOS image sensor is performed on the embedded FPGA board and Linux-based real-time video communication module. The integrated robot vision system aims to achieve a suitable platform available from both hardware and...
The Multispectral Imager combines parallel FPGA Hardware with modular and high dynamic mechanical design. Integrated processing and an interconnection to all electromechanical parts enable a real time image correction and processing with lowest latency time.
In this paper we present a real-time skin region detection method for high resolution video on embedded platforms. In the implementation, the region of interest is detected using two algorithms, running in parallel. One algorithm eliminates the background and the other one, detects the skin color patches in the image. To allow images to be processed rapidly on hardware, several techniques were employed...
A new camera technology for high-speed color scanning is presented that is based on a novel multi-line CMOS color image sensor. A pixel matrix consisting of multiple red-, green-, and blue-sensitive lines allows acquisition of dense RGB color information at every pixel location including the possibility of improving the signal to noise ratio by summing up multiple exposures in the analog domain of...
In this study, FPGA implementation of an algorithm for reducing color differences between left and right images, stemming from 3D video capturing problems such as different physical specifications, adjustments, and view angle of cameras capturing left and right video, and different direction of motion and are presented. Such problems that cannot be resolved during 3D video capturing, should be resolved...
Currently, both the market and the academic communities have required applications based on image and video processing with several real-time constraints. On the other hand, detection of moving objects is a very important task in mobile robotics and surveillance applications. In order to achieve an alternative design that allows for rapid development of real time motion detection systems, this paper...
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