This is a forum for perspectives on designing for marginalized communities worldwide. Articles will discuss design methods, theoretical/conceptual contributions, and participatory interventions with underserved commun...
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The dynamic programming-based dense stereo matching algorithms are faster than other global ones, but they usually suffer from the tangible horizontal "streaks" in their generated disparity maps. This proble...
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The dynamic programming-based dense stereo matching algorithms are faster than other global ones, but they usually suffer from the tangible horizontal "streaks" in their generated disparity maps. This problem takes place due to the independent processing of scanlines, ignoring vertical consistency between them. In this paper the path remembering method, which uses the information of the best paths of previous rows, is employed with new developments to establish more depth similarity between rows, especially along the slanted edges of objects in the scene. Also, a new way for estimating matching costs in the left border of the image is presented based on the information of the right-hand neighboring pixels. Mentioned improvements were applied to a well known and standard dynamic programming-based algorithm called "DP." Evaluation of the new proposed algorithm on standard stereo images shows considerable improvements in the depth estimation along the slanted edges and in the left border of the final results. As a more precise report, the average error rate reduces from 14.2% to 10.4%. (C) 2013 SPIE and IS&T
An attempt is made in implementing Burt pyramid which is an efficient algorithm that produces a multiresolution bandpass representation of image information. Since, the pyramid is a potentially powerful tool for advan...
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An attempt is made in implementing Burt pyramid which is an efficient algorithm that produces a multiresolution bandpass representation of image information. Since, the pyramid is a potentially powerful tool for advanced television image processing, a software package has been developed to perform both the decomposition and reconstruction of the algorithm on digitized television signals.
In this article, the development of the Swedish informatics curriculum during the 1970s, 1980s and 1990s is studied and described. The study's design is inspired by the curriculum theory presented by Lindensjo and...
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In this article, the development of the Swedish informatics curriculum during the 1970s, 1980s and 1990s is studied and described. The study's design is inspired by the curriculum theory presented by Lindensjo and Lundgren [2000], who suggest using the concept of arenas (the arenas of enactment, transformation and realisation) when discussing curriculum development. Data collection in this study comprises activities and actors in the arenas of enactment and transformation. Collected data include contemporary articles, journals, reports, booklets, government documents and archived documents. Findings show that informatics education in Sweden evolved from primarily focusing on programming knowledge related to automatic data processing and offered exclusively in vocational education (the 1960s and 1970s) to later (early 1980s) being introduced in the upper secondary school curriculum under the heading Datakunskap. The enactment of the informatics curriculum in 1983 encompassed programming, system development and computing in relation to applied sciences and civics. Mathematics teachers did much of the experimental work. It is shown that the competencies of upper secondary school teachers at the time rarely corresponded to the demands of the subject (content knowledge, resources and pedagogical skills). Stereotypical examples were therefore developed to support teachers in instructing about the subject content. When implemented in the theoretical natural science-programme, system development/systemisation was transformed into a twofold issue, comprising vocational attributes and societal aspects of computer programming. The implementation of today's informatics education, including programming in the curriculum, should draw from lessons learned from history. For a successful outcome, this study emphasises the necessity to understand 1) the common incentives for introducing computer programming in the curriculum, 2) the requirement for teachers' pedagogical content knowl
The Software Design Processor (SDP), an automated, interactive tool which supports the design phases of the software development cycle, is described. The objective of the SDP is to minimize the designer effort needed ...
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The Software Design Processor (SDP), an automated, interactive tool which supports the design phases of the software development cycle, is described. The objective of the SDP is to minimize the designer effort needed to properly document a software design while assuring that all of the necessary design information is present in that documentation. The high level design phase is discussed.
Researchers at several universities are working on a system that can "understand" a document and translate it accurately. Major programming advances are enabling computers to store and manipulate knowledge a...
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Researchers at several universities are working on a system that can "understand" a document and translate it accurately. Major programming advances are enabling computers to store and manipulate knowledge about the realities behind word usage.
The Communications Web site, http://***, features more than a dozen bloggers in the BLOG@CACM community. In each issue of Communications, we’ll publish selected posts or *** us on Twitter at http://***/blogCACMhttp:/...
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The Communications Web site, http://***, features more than a dozen bloggers in the BLOG@CACM community. In each issue of Communications, we’ll publish selected posts or *** us on Twitter at http://***/blogCACMhttp://***/blogs/blog-cacmVoid safety, says Bertrand Meyer, relies on type declarations and static analysis.
The existing practices and techniques in treating software requirements are summarized. The concept of system design and its impact on software requirements is emphasized. Current problems with software requirements a...
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The existing practices and techniques in treating software requirements are summarized. The concept of system design and its impact on software requirements is emphasized. Current problems with software requirements and the potential research direction for solutions are considered.
A hybrid algorithm that combines genetic programming (GP) and genetic algorithms (GAs) that deduce a closed-form correlation of building energy use is presented. Throughout the evolution, the terms, functions, and for...
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A hybrid algorithm that combines genetic programming (GP) and genetic algorithms (GAs) that deduce a closed-form correlation of building energy use is presented. Throughout the evolution, the terms, functions, and form of the correlation are evolved via the genetic program. Whenever the fitness of the best correlation stagnates for a specific number of GP generations, the GA optimizes the real-valued coefficients of each correlation in the population. When the GA, in turn, stagnates, correlations with optimized coefficients and powers are passed back to the GP for further search. The hybrid algorithm is applied to the problem of predicting energy use of a U-shape building. More than 800 buildings with various foot-print areas, relative compactness (RC), window-to-wall ratio (WWR), and projection factor (PF) values were simulated using the VisualDOE(TM) energy simulation engine. The algorithm tries to minimize the difference between simulated and predicted values by maximizing the R-2 value. The algorithm was able to arrive at a closed-form correlation that combines the four building parameters, accurate to within 4%. The methodology can be easily used to model any type of data behavior in any engineering or nonengineering application.
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