Preprints (not yet peer-reviewed)

35 downloads
118 views

Our work addresses the problem of automatically recognising a Sign Language alphabet from a given still image obtained under arbitrary illumination. To solve this problem, we designed a computational framework that is founded on the notion that shape features are...

["Human-Computer Interaction","Computer Vision"]
doi:10.7287/peerj.preprints.26725v1
136 downloads
264 views

In recent years, with the improvement in imaging technology, the quality of small cameras have significantly improved. Coupled with the introduction of credit-card sized single-board computers such as Raspberry Pi, it is now possible to integrate a small camera...

["Human-Computer Interaction","Artificial Intelligence","Autonomous Systems","Computer Vision"]
doi:10.7287/peerj.preprints.3410v1
379 downloads
287 views

Several ball tracking algorithms have been reported in literature. However, most of them use high-quality video and multiple cameras, and the emphasis has been on coordinating the cameras or visualizing the tracking results. This paper aims to develop a system...

["Artificial Intelligence","Computer Vision"]
doi:10.7287/peerj.preprints.3402v1
160 downloads
341 views

Sub-Saharan Africa and other developing regions of the world are dominated by smallholder farms, which are characterized by small, heterogeneous, and often indistinct field patterns. In previous work, we developed an algorithm for mapping both smallholder and commercial...

["Human-Computer Interaction","Algorithms and Analysis of Algorithms","Computer Vision","Spatial and Geographic Information Systems"]
doi:10.7287/peerj.preprints.3004v1
268 downloads
295 views

Recognition of human emotions from the imaging templates is useful in a wide variety of human-computer interaction and intelligent systems applications. However, the automatic recognition of facial expressions using image template matching techniques suffer from...

["Human-Computer Interaction","Algorithms and Analysis of Algorithms","Artificial Intelligence","Computer Vision","Data Mining and Machine Learning"]
doi:10.7287/peerj.preprints.2794v1
293 downloads
749 views

Secret sharing approach and in particular Visual Cryptography (VC) try to address the security issues in dealing with images. In fact, VC is a powerful technique that combines the notions of perfect ciphers and secret sharing in cryptography. VC takes an image...

["Computer Vision","Cryptography","Graphics","Security and Privacy"]
doi:10.7287/peerj.preprints.2682v3
106 downloads
221 views

In this paper a method for detection of image forgery in lossy compressed digital images known as error level analysis (ELA) is presented and it's noisy components are filtered with automatic wavelet soft-thresholding. With ELA, a lossy compressed image is recompressed...

["Artificial Intelligence","Computer Vision","Data Mining and Machine Learning","Graphics"]
doi:10.7287/peerj.preprints.2619v1
58 downloads
274 views

The need of an approach for the definition of a platform-independent medical digital library, using only open-source tools, will be described. To test the need and the success of such an approach, a library will be created, which can later be used in a larger scale...

["Bioinformatics","Computer Vision","Digital Libraries","Software Engineering"]
doi:10.7287/peerj.preprints.2599v1
39 downloads
192 views

Li (ICCV, 2005) proposed a novel generative/discriminative way to combine features with different types and use them to learn labels in the images. However, the mixture of Gaussian used in Li’s paper suffers greatly from the curse of dimensionality. Here I propose...

["Computer Vision"]
doi:10.7287/peerj.preprints.2220v1
219 downloads
406 views

Current coral reef health monitoring programs rely on biodiversity data obtained through the acquisition and annotation of underwater photographs. Manual annotation of these photographs is a necessary step, but has become problematic due to the high volume of images...

["Computer Vision","Data Mining and Machine Learning"]
doi:10.7287/peerj.preprints.2026v2
149 downloads
333 views

We present a geometric model of image formation in Scheimpflug cameras that is most general. Scheimpflug imaging is commonly used is scientific and medical imaging either to increase the depth of field of the imager or to focus on tilted object surfaces. Existing...

["Computer Vision","Theory and Formal Methods"]
doi:10.7287/peerj.preprints.1887v1
145 downloads
361 views

An object-oriented computational framework for the transformation of colour data and colour metric tensors is presented. The main idea of the design is to represent the transforms between spaces as compositions of objects from a class hierarchy providing the methods...

["Computer Vision","Graphics","Optimization Theory and Computation","Scientific Computing and Simulation","Software Engineering"]
doi:10.7287/peerj.preprints.1700v1
400 downloads
648 views

In this article, we briefly describe various tools and approaches that algebraic geometry has to offer to straighten bent objects. throughout this article we will consider a specific example of a bent or curved piece of paper which in our case acts very much like...

["Computer Vision","Mobile and Ubiquitous Computing"]
doi:10.7287/peerj.preprints.1618v1
337 downloads
838 views

Loss of vision is a severe impairment to the dominant sensory system. It often has a catastrophic effect upon the sufferer, with knock-on effects to their standard of living, their ability to support themselves, and their care-givers lives. Research into visual...

["Human-Computer Interaction","Computer Vision","Emerging Technologies","Multimedia","Visual Analytics"]
doi:10.7287/peerj.preprints.1289v2
687 downloads
614 views

The aim of this investigation is to evaluate a new method for blur elimination caused by rotational motion of any object, assuming that the center and the angle of the rotation are known. In this new method, which is called Enhanced Rotational De-convolution Conjugate...

["Computer Vision","Software Engineering"]
doi:10.7287/peerj.preprints.872v3
What is a PeerJ Preprint?

A PeerJ Preprint is a draft of an article, abstract, or poster that has not yet been peer-reviewed for formal publication. Submit a draft, incomplete, or final version of your work for free.

Submissions today can be approved by Editorial Staff and online in 24 hours.

Establish precedent. Solicit feedback. Publish updates.

Refine by manuscript type

Top subject areas - Preprints

Top subject areas - People

View all subject areas