In this paper, rotation, translation and luminance invariant features for texture image retrieval are investigated. The features are derived based on the statistical (standard deviation and shape parameter) distribution of the transform coefficients extracted from each steerable pyramid subband. By utilizing the proposed invariant features, the similarity measure between query and database imag...

This paper introduces a new method to represent the surface of objects using two dimensional combinatorial maps. The classical definition of two dimensional combinatorial maps is extended here by adding a “back face” that corresponds to the non–visible part of the object. As a first step, every object in the scene is extracted in one image pyramid, where levels are related by means of coordinat...

We describe a novel recursive lter design technique for multi-scale \pyramid" transforms. The recursion in the design technique follows that of the pyramid construction, and allows us to solve a reduced design problem at each step. We demonstrate the use of this technique by designing lters of various orientation bandwidths for use in a \steerable pyramid" image transform.1

In this paper, a multi-resolution analysis is proposed for image quality assessment. Structural features are extracted from each level of a pyramid decomposition that accurately represents the multiple scales of processing in the human visual system. To obtain an overall quality measure the individual level metrics are accumulated over the considered pyramid levels. Two different metric design ...

In knowledge management literature it is often pointed out that it is important to distinguish between data, information and knowledge. The generally accepted view sees data as simple facts that become information as data is combined into meaningful structures, which subsequently become knowledge as meaningful information is put into a context and when it can be used to make predictions. This v...

Granular Computing is an emerging conceptual and computing paradigm of information processing. A central notion is an information-processing pyramid with different levels of clarifications. Each level is usually represented by ‘chunks’ of data or granules, also known as information granules. Rough Set Theory is one of the most widely used methodologies for handling or defining granules. Ontolog...

The establishment and management of information infrastructures in chains and beyond is a prerequisite for the implementation of the emerging comprehensive requirements on tracking, tracing and quality assurance in agriculture and the food sector. They support the guarantee of food safety and the focus on consumers’ quality needs. The challenge for the sector is the agreement on, and the implem...