A method of rotation invariant texture classification based on spatial frequency model is developed. Features are derived from the multichannel Gabor filtering method. The classification performance is first tested on a set 1440 samples of 15 Brodatz textures rotated in 12 directions (0 to 165 in steps of 15 degrees). For the 13-class problem reported in [13] we got better classification with o...

An efficient texture representation for unsupervised segmentation is addressed based on the concept of Wold decomposition. Textures are described by the wavelet tuned to various scales and rotations to describe its deterministic component, and by the autogressive model to describe its indeterministic component. The wavelet features and the AR parameters capturing the perceptual properties, "per...

As new products and systems grow in complexity and embed new technologies, designers face new challenges for adequately pursuing their prototyping activities. Tangible User Interface toolkits provide an easier development environment for rapidly exploring and prototyping functional physical interactive devices. Such toolkits range from friendly toy-like building blocks to advanced wireless micr...

Three studies of creative design in engineering and product design are reported. The studies are of outstanding or exceptional designers and comprise one protocol study and two retrospective case studies. In each case, an example of the designer’s creative approach to a particular design problem is analysed. Comparisons between the three examples are drawn, and there appear to be some striking ...

can address every future situation effectively, so designers must be prepared to appreciate design situations subtly and with discipline, invent and re-invent processes, and take personal responsibility for the effects of their designs rather than handing off responsibility for quality outcomes to a single process or theory (Nelson & Stolterman, 2003). Designers act as human instruments, analog...

designers draw diagrams to think about architectural concepts and design concerns. scientists are interested in programming computers to recognize and interpret design diagrams to deliver appropriate tools for the design task at hand. researchers conducted empirical studies to find out if designers share drawing conventions when designing. the experiment results show that designers use differen...

Texture plays an important part in many Content Based Image Retrieval systems. This paper describes the results from a human study, which asked 30 volunteers to classify images from the Brodatz Textures album. We use these results to derive a subset which show good agreement among the different individuals. The results for this subset were used to evaluate the retrieval performance of a range o...

22 Recently, the deterministic tourist walk has emerged as a novel approach for texture analysis. This 23 method employs a traveler visiting image pixels using a deterministic walk rule. Resulting trajectories 24 provide clues about pixel interaction in the image that can be used for image classification and identifi25 cation tasks. This paper proposes a new walk rule for the tourist which is b...

Study of different patterns on a local neighborhood of a texture plays an important role in characterization, and classification of the textures. Many preprocessing steps are used in the generation of textures for a better quality. The present paper studies how the percentage of occurrence factor of a typical pattern varies after applying various local preprocessing steps. For this eight simple...