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Gaze of the human eye may act as a communication medium for limb disabled people to interact with computers. In order to determine gaze direction, the first necessary step in image processing is segmentation of iris from entire eye image. In this paper Daugman's algorithm is implemented that uses Integro Differential Operator (IDO) to differentiate iris boundary from sclera part of eye and to find...
In this paper the implementation of a watershed transform based on Tarjan's Union-Find algorithm is described. The algorithm computes the watershed as defined by Meyer in [4]. The algorithm consists of two stages. In the first stage the image to be segmented is transformed into a lower complete image, using a FIFO-queue algorithm. In the second stage, the watershed of the lower complete image is computed...
As smart phones and tablets are becoming ubiquitous and taking over as the primary choice for accessing the Internet worldwide, ensuring a secure gateway to the servers serving such devices become essential. CAPTCHAs play an important role in identifying human users in internet to prevent unauthorized bot attacks. Even though there are numerous CAPTCHA alternatives available today, there are certain...
From the ancient age, gesture was the first mode of communication, after the evolution of human civilization they developed the verbal communication, but still non-verbal communication is equally significant. Such on-verbal communication is not only used for physically challenged person but also it can be efficiently used for various applications such as 3D gaming, aviation, surveying, etc. This is...
Documents can be a valuable source of information but often they suffer degradation problems, especially in the case of historical documents, such as strains, background of big variations and uneven illumination, ink seepage, etc. Binarization techniques should be applied to remove the noise and improve the quality of the documents. Collections of historical and old document images care commonly provided...
This paper aims for the development of a highly efficient computer aided decision system to automatically detect abnormalities in mammograms. Enhancement of the contrast of the intensity image by transforming the values using Contrast Limited Adaptive Histogram Equalization (CLAHE) is done for preprocessing of images after classifying the mammograms into various intensity levels. Then mathematical...
With all the advances accomplished in the computer gaming world progressively emerging more equipment's into the market in order to communicate with computers. Most of these sophisticated devices are for targeted applications or special purpose and also very expensive. With this in our mind we propose a Simple Human Computer Interaction with Machine using Physical Gesture Framework which uses regularly...
Content based image retrieval has become a major research interest recently. This paper presents an improved image similarity measure for image retrieval system. In the region based image comparison, two images are usually compared in terms of sum of the Euclidean distances among their regions. In this work, the image similarity measure is enhanced through a fuzzyfication of regions' importance and...
CAPTCHAs exploit the gap in the ability between a human and a machine to understand the semantics of specific multimedia content, with vast applications in computer security. In this paper we compare two techniques in automated CAPTCHA solving for text-based CAPTCHA schemes, i.e., Classification based on the Vector Space Model (VSM) versus a popular Optical Character Recognition (OCR) engine. For...
We will present in this paper a method for the reconstruction of the oral 3D structure using Computed Tomography (CT) sections obtained from Cone Beam Computed Tomography (CBCT). A high-quality visualization of the dental tissues, based nowadays on fine 3D reconstruction, is essential for accurate diagnosis and treatments. Dental CBCT images present several major problems because of the noisiness...
The efficiency and the service life of the photovoltaic modules are affected by the surface defects. Therefore, it is critical to detect the photovoltaic modules whether it is qualified or not before assembling into solar panels. This paper applies a method to detect micro-cracked defects in photovoltaic modules using electroluminescence (EL) technology and image processing. After applying forward...
Rare colored capsule (RCC) is the capsule which is mixed in the normal product but with different color. To detect this kind of capsules online, a method based on RGB color space and using HSV color difference formula is proposed in this paper. Considering HSV color space with more balanced color-difference perception, the original RGB formatted capsule image is transformed to HSV color space for...
Segmentation is one of the important steps of character recognition system. It is an important step because inaccurate segmentation of characters will cause errors in the recognition stage. In optical character Recognition (OCR) system the presence of touching characters and broken characters decreases the accuracy rate of character recognition. Touching of half character or full character with other...
Stating that human touch sensing surfaces have revolutionized the era of human machine interaction is perhaps stating the obvious. It is a known fact that the invention of touch-screen has almost eradicated the so-called primary input device, “the keypad” or “the keyboard” from modern electronic gadgets. The technology used in order to sense the touch is noteworthy. It is broadly categorized as Resistive...
Mango (Mangifera Indica L.) sorting is the most desired expertise in the evaluation of automatic mango grading systems. Traditionally, Naked eye observation is used to assess the quality of mango. Hence, there is a need to automate grading process. Image processing and machine learning provide one alternative for an automated, non-destructive and cost-effective grading. In this paper, proposed methodology...
Secure delivery of secret data on the Internet is an important research topic in digital communications. Data encryption and steganography are two common techniques used for sending secret data over a public computer network. Steganography utilizes a digital medium as a cover in the delivery of secret data. For medical and military image applications, reversibility is an important requirement in data...
Acquisiton of crop growth stage information can not only help to analyze the relation between the crop growth process and environmental condition, but also to guide the field operation effectively. Therefore, different growth stages of rape crops are monitored with the visual system constructed in this paper, and the first critical growth stage of rape is detected automatically, which is seeding emergence...
This system captures and analyses the growth of crops based on machine vision technology, controlled by the PLC variables and achieve the objective of saving fertilizer, improving economic efficiency and protecting the environment. It uses shape or texture of the crops and background information contained in the image to classify, builds database algorithms, processes the collecting real-time signal...
License plate recognition (LPR) plays a significant role throughout this busy world, owing to the rise in vehicles day by day. Stealing of vehicles, breaking traffic rules, coming into restricted space also are increasing linearly, thus to dam this act registration code recognition is intended. Among the fundamental process steps such as detection of number plate, segmentation of characters and recognition...
The diabetes is a disease, that in the year of 2013, affects 382 million people around the world, half of that group doesn't even know they're affected. At Medicine is known that there is relation between the type II of this disease and the hypertrophy of intestinal mucosa, but it isn't exactly known what binds them. In the present paper it is stated the process of villus segmentation — being the...
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