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This thesis makes analysis through digital image processing, in which methods such as Median Filtering Noise Reduction, Sectoring Threshold Segmentation, Logical Values Match and so on are put into use to process the digital image data of barcode and to implement its fast identification. Automatic identification technology of barcode has the advantage of low cost and has been being widely used in...
Aimed at the problems such as narrow detecting range, low sensitivity and heavy helmet weight during tracking the head position in HMD, a new method based on the video image processing is given, which can detect the bearing angel and pitching angel of HMD relative to the aircraft. Two high-speed collection cameras installed in the back of the cockpit are used to identify the location of five points...
Neural networks was used in the camera calibration of binocular stereo vision, segmentation and recognition of fruit or vegetable images, fruit or vegetable classification, orientation error amendment of fruit or vegetable, obstacle avoidance of robot manipulator, sensor data fusion about fruit and vegetable harvesting robot. The research results in all the aspects mentioned above of fruit and vegetable...
A method to analyze the similarity between two quantum images of the same size is proposed based on a representation for the quantum images. The similarity value is estimated according to the probability distribution of the results from quantum measurements. The proposed method is fast because a single operation can transform the entire information encoded in two images simultaneously. Two simulation-based...
Almost undoubtedly, the greatest invention of the 20th century has been the computer. The computer uses several auxiliary devices to establish a seamless interaction with the user. One challenge faced during the development of these devices, was the lack of direct interfacing between the machine and the user. Today we see Natural User Interfaces (NUI), which include touch activated and speech activated...
Novel algorithms were developed for use on a low-price, consumer four-rotor helicopter with limited on-board computational capacity. Simplified occupancy grid maps, basic wall-following and obstacle avoidance were constructed from laser rangefinder data using image processing primitives in OpenCV. These algorithms generated obstacle free paths along walls in preliminary testing. The resulting system...
The process of how we can achieve a low-cost infra-based interaction device informs of a motion tracking system is shown, that is in the first place, appropriate for personal use. The analysis for discovering the requirements of the intended system was based on gathering information about the proposed and other existing systems and then distilling the user and system requirements from this information...
In our previous works, we developed a system named SCROLL in order to log, organize, recall and evaluate the learning log. However up to now, we just use an active mode to record logs. This means that a learner must take a capture of learned contents consciously and most of learning chances be lost unconsciously. This paper proposes a system named PACALL (Passive Capture for Learning Log) in order...
Omnidirectional image acquisition sensor has become an integral part of robotic application. In this paper, a catadioptric sensor is developed for inspection of the interior wall of a cylindrical pipe. The developed system provides 360 degree field of view and can be used as an onboard sensor of a robotic system where human intervention is not convenient or impossible. Image processing is done to...
In this paper, we have proposed a Human Computer Interface, replacing all the basic mouse operations by simple laser beam operations controlled by a Laser Pen (LP) & tracked by the Laser Track Pad (LTP). This approach helps to overcome the limitations of the physically challenged people for interacting with the computer systems. The main emphasis of this work is on mapping the Display Units (DUs)...
The study has proposed a novel and innovative system that uses image processing techniques for converting an imprinted Braille pattern into natural language character. The processing takes place through a series of steps implemented in MATLAB. The major step is the removal of noise from the scanned image of an imprinted Braille pattern and other artifacts and then segmenting the scanned image to yield...
The motion of living beings can be recorded with motion capture systems. The recorded data can be used to animate virtual characters. There are many methods used by motion capture systems. The paper presents the development of a motion capture system for more than one performer with active optical markers. The performers wear homogenous, illuminating markers attached to each relevant joint. Movements...
Introduce the research contents of computer graphics research, development history, composition and function of the graphics system, applications and implementation of realistic graphics technology, generalize the graphics basic content, in order to better grasp the computer graphics and image processing technology.
In this paper, we address the problem of reconstructing 3D volumetric models, illustrating human sporting performance for use in coaching scenarios. We advocate the use of low cost camera networks for acquiring such data, allowing the approach to be feasibly adopted by both amateur and elite level sports athletes. A dynamic voxel carving approach is described, coupled with over-head player tracking...
A Multi-Channel Representation for Quantum Image (MCRQI) is proposed to facilitate the further image processing tasks based on the Flexible Representation for Quantum Image (FRQI). Channel Swapping Operation, One Channel Operation, are proposed as basic image processing operations on MCRQI representation. The simulation experiment results on classical computer show that the channel information of...
This paper studies the X-Y CNC platform, in order to achieve the vision system by computer according to the X-Y CNC platform on the actual position the automation of processing. This system is in Microsoft Visual C/C + + platform development, system including the use of camera and optical components, computer, motion controller, and X-Y CNC platform. First camera which the workpiece on a picture,...
According to the deficiencies of traditional median filter algorithms and the characteristics of salt & pepper noise, this paper puts forward an algorithm of the clustering median filter. The gray value of the image block in all directions is computed statistically and analyzed to determine the relationship between the pixel and its neighborhood using cluster analysis in the algorithm proposed...
Automatic recognition of facial expression remains a challenging task in computer vision, because of large amount of image data and subtle difference in facial expressions. In this paper, we present a customizable system for facial expression recognition using non-negative matrix factorization (NMF). Our system can be described in two major phases: the first phase uses preprocessing and the NMF for...
The discerning person usually can not read Braille information without training, then many parents have difficulty educating their blind or visually impaired children. Teachers engaged in special education have to depend on Braille translator when marking Braille papers or assignments, so subjective factors are brought into the evaluation process. This paper describes a new system that recognizes...
This study provides a method to detect the smoke in a field by computer vision. The software of smoke extraction is developed by using the graphical programming language. In processing the video images, it utilizes the HSI model to extract statically and dynamically the pixels of the smoke with specific saturation. The other pixels that are filtered off are regarded as the backgrounds. Elimination...
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