This paper proposes an effective algorithm for visual code marker detection. It incorporates local binarization scheme and morphological image processing techniques with the pattern recognition method to achieve best performance. Experimental results have shown that the proposed detection algorithm is able to detect the visual code marker information quickly and accurately under different illum...

Recently, we have discussed the use of GIMP Retinex, a filter of the GNU Image Manipulation Program, for enhancing images in several applications, ranging from those obtained by microscopes to the images coming from satellites. Retinex can also enhance foggy images: here we investigate the role of GIMP filter in their thresholding for binarization.

Binarization of digital documents is the task of classifying each pixel in an image of the document as belonging to the background (parchment/paper) or foreground (text/ink). Historical documents are often subject to degradations, that make the task challenging. In the current work a deep neural network architecture is proposed that combines a fully convolutional network with an unrolled primal...

In this paper is presented a method for the accurate estimation of the image boundary from incomplete raw MRI data. This is necessary for the phase correction and the image reconstruction from incomplete Cartesian or Radial scans using MR techniques and therefore for the reduction of MRI scan time. The exact estimation method comprises the binarization of the low resolution image, the fast sepa...

Document image has been the area of research for a couple of decades because of its potential application in the area of text recognition, line recognition or any other shape recognition from the image. For most of these purposes binarization of image becomes mandatory as far as recognition is concerned. Throughout couple decades standard algorithms have already been developed for this purpose....

This paper presents an application of computer vision techniques, shape analysis and classification in an augmented reality environment. Augmented reality (AR) aims to create user interface in which virtual objects are overlaid on the physical environment. There are many potential AR applications in different fields, like medical visualization, engineering design, maintenance and repair, annota...

We propose a novel coplanar filter, which exploits the coplanarity of gray-level distribution of neighboring pixels, to pre-filter the document images. Experiments show that the proposed filter exhibits the following desired properties for document image binarization: (1) impulsive noise removal, (2) piecewise smoothing, and (3) sharp edge preservation.