{ Future users of satellite images will be faced with a huge amount of data. The development of \Content-based image retrieval algorithms for Remote Sensing Image Archives" will allow them to eeciently use the upcoming databases of large images. Here, we present an image segmentation and feature extraction algorithm, that will enable users to search images by content. In our approach, images ar...

Region quadtrees are convenient tools for hierarchical image analysis. Like the related Haar wavelets, they are simple to generate within a fixed calculation time. The clustering at each resolution level requires only local data, yet they deliver intuitive classification results. Although the region quadtree partitioning is very rigid, it can be rapidly computed from arbitrary imagery. This res...

Given a graph G, a visual cryptography scheme based on the graph G is a method to distribute a secret image among the vertices of G, the participants, so that a subset of participants can recover the secret image if they contain an edge of G, by stacking their shares, otherwise they can obtain no information regarding the secret image. In this paper we apply maximal independent sets of the grap...

Abstract Studying cleavage properties of protective oxide scales is imperative to understand their fracture behaviour, since transgranular observed in many cases. The small thickness and polycrystalline structure such makes it difficult identify active planes directly from mechanical testing. To resolve this issue for Cr2O3, we present an approach experimentally through micro-cantilever bending...

d c Abstract. A number of fundamental techniques, for image representation an ompression, are based on a pyramidal image decomposition approach, first l p proposed by Burt and Adelson in [6]. In this communication, we review severa yramidal image decomposition techniques which are based on linear, as well l d as, non-linear approaches. We argue that the design of a proper pyramida ecomposition ...

Ischemia/Reperfusion (I/R)-induced cerebral injury has been reported as a leading cause of deathand long-term disabilities. Hippocampus is an area which is more sensitive to be affected by I/Rand hypoxic conditions. Coenzyme Q10 is a strong antioxidant which plays a role in membranestabilization. This study aims to investigate the possible role of CoQ10 in ameliorating thehistomorphological cha...

The physical contrast of simple images such as sinusoidal gratings or a single patch of light on a uniform background is well defined and agrees with the perceived contrast, but this is not so for complex images. Most definitions assign a single contrast value to the whole image, but perceived contrast may vary greatly across the image. Human contrast sensitivity is a function of spatial freque...

Initializing optical flow field by either sparse descriptor matching or dense patch matches has been proved to be particularly useful for capturing large displacements. In this paper, we present a pyramidal gradient matching approach that can provide dense matches for highly accurate and efficient optical flow estimation. A novel contribution of our method is that image gradient is used to desc...

The physical contrast of simple images such as sinusoidal gratings or a single patch of light on a uniform background is well defined and agrees with the perceived contrast, but this is not so for complex images. Most definitions assign a single contrast value to the whole image, but perceived contrast may vary greatly across the image. Human contrast sensitivity is a function of spatial freque...

Abstract Permanent magnet synchronous motors (PMSMs) have many advantages attributed to the structure of permanent magnet, which connects influences each type fault. However, diagnostic methods are not capable monitoring multitype faults with one index or method, due closed-loop control non-stationarity. There a few based on convolutional neural networks (CNNs) and vibration analysis; however, ...