34,525 Result(s)
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Article
An improved multimodal signal-image compression scheme with application to natural images and biomedical data
In this paper, a new multimodal compression scheme is proposed with the aim of compressing jointly an image and a signal via a single codec. The key idea behind our approach is to insert a wavelet-decomposed s...
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Article
Process color watermarking: the use of visual masking and dot gain correction
Subtractive-Color-Reproduction is the fundamental mechanism in 4-color process printing, which employs CMYK (cyan, magenta, yellow and black) dots for color reproduction. Watermarks embedded in RGB images are ...
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Automatic boundary detection based on entropy measures for text-independent syllable segmentation
In this paper, we study the boundary detection in syllable segmentation field. We describe an algorithm proposed for text-independent syllable segmentation. This algorithm provides a performance comparison bet...
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On subjective quality assessment of adaptive video streaming via crowdsourcing and laboratory based experiments
Video streaming services are offered over the Internet and since the service providers do not have full control over the network conditions all the way to the end user, streaming technologies have been develop...
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Article
Formal concept analysis based user model for distributed systems
User profile has contributed to customize user access and adjusts applications to its needs. In this respect, automatically building of user profiles issue is an important research area. Nevertheless, standard...
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Article
Color and texture applied to a signature-based bag of visual words method for image retrieval
This article addresses the problem of representation, indexing and retrieval of images through the signature-based bag of visual words (S-BoVW) paradigm, which maps features extracted from image blocks into a set...
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Article
3D text segmentation and recognition using leap motion
In this paper, we present a method of Human-Computer-Interaction (HCI) through 3D air-writing. Our proposed method includes a natural way of interaction without pen and paper. The online texts are drawn on air...
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Article
Ego-motion estimation concepts, algorithms and challenges: an overview
Ego-motion technology holds great significance for computer vision applications, robotics, augmented reality and visual simultaneous localization and mapping. This paper is a study of ego-motion estimation bas...
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Optimized learning instance-based image retrieval
Image retrieval is a recognition technique in the field of computer vision. In most cases, high-quality retrieval is often supported by adequate learning instances. However, in the process of learning instance...
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Article
A secure and provable multi-server authenticated key agreement for TMIS based on Amin et al. scheme
The security for Telecare Medicine Information Systems (TMIS) has been crucial for reliable dispensing of the medical services to patients at distant locations. Security and privacy element needs to be there f...
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Article
Optimized H.264 compression of sign language video
In TV broadcasting deaf people are not able to get information from the audio content. In public television, some programs may be accompanied by a sign language interpreter as a part of the broadcasted signal....
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Article
A robust face hallucination technique based on adaptive learning method
Position-patch based approaches have been proposed for single-image face hallucination. This paper models the face hallucination problem as a coefficient recovery problem with respect to an adaptive training s...
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Article
Context-aware HDR video distribution for mobile devices
HDR video on mobile devices is in its infancy and there are no solutions yet that can achieve full HDR video reproduction due to computational power limitations. In this paper we present a novel and versatile ...
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Article
Users’ viewpoint of usability and user experience testing procedure - gaining methodological insights in a case of an interactive HbbTV application
We present a novel meta-methodological approach for the user experience and usability methodology procedure evaluation, shown in an example of the user experience and usability study of an interactive HbbTV ap...
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Article
An improved method for digital image fragile watermarking based on chaotic maps
In this paper, the digital image fragile watermarking method based on chaotic maps is proposed. Our method has some significant advantageous in comparison with other available methods. Firstly, we reduce water...
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Article
Local and global approaches for unsupervised image annotation
Image annotation is the task of assigning keywords to images with the goal of facilitating their organization and accessibility options (e.g., searching by keywords). Traditional annotation methods are based o...
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Article
An efficient (t,n)–threshold secret image sharing scheme
We propose a novel (t,n)–threshold secret image sharing scheme based on Shamir’s polynomial interpolation paradigm. The proposed scheme is a derivative of Thien and Lin’s (Computers & Graphics 26(5):765–770, [13]...
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Article
Learning two-pathway convolutional neural networks for categorizing scene images
Scenes are closely related to the kinds of objects that may appear in them. Objects are widely used as features for scene categorization. On the other hand, landscapes with more spatial structures of scenes ar...
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Article
Anomaly detection in crowded scenes using motion energy model
We present a new method for detection of abnormal behaviors in crowded scenes. Based on statistics of low-level feature—optical flow, which describes human movement efficiently, the motion energy model is prop...
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Article
ZLBM: zero level binary mapping technique for video security
In recent days, providing security to data is a crucial and critical task in many image processing applications. Specifically, video security is an important and demanding concept. For this purpose, some of th...
