title: Heterodyne range imaging in real-time

authors: Jongenelen, Adrian P.P.

subjects: FPGA

abstract: A versatile full-field range imaging system has previously been constructed. This system is configurable in software to produce either high precision or fast acquisition range images. Indicatively a 10 second exposure has been shown to produce a range image of sub-millimeter precision, whilst video frame rate (30 fps) acquisition provides for centimetre precision. Currently the acquisition time of the system is to a large degree constrained by the off-line processing of the frames by an external computer. This paper presents an alternative to the off-line PC image processing utilising an Altera Stratix II FPGA. Processing rates up to 30 frames per second have been achieved with the added advantage that many of the previous systempsilas existing digital electronics can also be accommodated, providing for an even more compact and flexible system.

text: Heterodyne range imaging in real-time A versatile full-field range imaging system has previously been constructed. This system is configurable in software to produce either high precision or fast acquisition range images. Indicatively a 10 second exposure has been shown to produce a range image of sub-millimeter precision, whilst video frame rate (30 fps) acquisition provides for centimetre precision. Currently the acquisition time of the system is to a large degree constrained by the off-line processing of the frames by an external computer. This paper presents an alternative to the off-line PC image processing utilising an Altera Stratix II FPGA. Processing rates up to 30 frames per second have been achieved with the added advantage that many of the previous systempsilas existing digital electronics can also be accommodated, providing for an even more compact and flexible system.

year: 2008

title: Detecting sequential structure

authors: Nevill-Manning, Craig G.

subjects: PBD

abstract: Programming by demonstration requires detection and analysis of sequential patterns in a user’s input, and the synthesis of an appropriate structural model that can be used for prediction. This paper describes SEQUITUR, a scheme for inducing a structural description of a sequence from a single example. SEQUITUR integrates several different inference techniques: identification of lexical subsequences or vocabulary elements, hierarchical structuring of such subsequences, identification of elements that have equivalent usage patterns, inference of programming constructs such as looping and branching, generalisation by unifying grammar rules, and the detection of procedural substructure., Although SEQUITUR operates with abstract sequences, a number of concrete illustrations are provided.

text: Detecting sequential structure Programming by demonstration requires detection and analysis of sequential patterns in a user’s input, and the synthesis of an appropriate structural model that can be used for prediction. This paper describes SEQUITUR, a scheme for inducing a structural description of a sequence from a single example. SEQUITUR integrates several different inference techniques: identification of lexical subsequences or vocabulary elements, hierarchical structuring of such subsequences, identification of elements that have equivalent usage patterns, inference of programming constructs such as looping and branching, generalisation by unifying grammar rules, and the detection of procedural substructure., Although SEQUITUR operates with abstract sequences, a number of concrete illustrations are provided.

year: 1995

title: Claiming space and restoring harmony within hui whakatika

authors: Berryman, Mere

subjects: Maori

abstract: The time has come for indigenous, specifically Māori psychologies, to move from the margins, and claim legitimate space within the discipline of psychology (MPRU, 2007). Phinney and Rotheram (1987) argue that there are ethnicallylinked ways of thinking, feeling and acting that are acquired through socialisation. The message implicit in this statement has profound implications for a discipline that seeks to understand and respond to the intricacies of human behaviour. Although the epistemological paradigms emerging from the experiences of indigenous minorities such as Māori may offer a challenge to mainstream knowledge and perspectives (Gordon, 1997), it is clear that disregarding such alternatives may well leave the discipline of psychology impoverished. On the other hand, paying attention to alternative paradigms may well serve to enrich this discipline. This paper presents two successful Hui Whakatika that were led by Māori in mainstream settings. Particular dimensions of, and congruencies between both are explored. The first highlights the vital role of a kaumatua in facilitating and guiding the entire process; the second focuses on the role and experiences of a kaitakawaenga as he works collaboratively with whānau members to find resolution and restore harmony.

text: Claiming space and restoring harmony within hui whakatika The time has come for indigenous, specifically Māori psychologies, to move from the margins, and claim legitimate space within the discipline of psychology (MPRU, 2007). Phinney and Rotheram (1987) argue that there are ethnicallylinked ways of thinking, feeling and acting that are acquired through socialisation. The message implicit in this statement has profound implications for a discipline that seeks to understand and respond to the intricacies of human behaviour. Although the epistemological paradigms emerging from the experiences of indigenous minorities such as Māori may offer a challenge to mainstream knowledge and perspectives (Gordon, 1997), it is clear that disregarding such alternatives may well leave the discipline of psychology impoverished. On the other hand, paying attention to alternative paradigms may well serve to enrich this discipline. This paper presents two successful Hui Whakatika that were led by Māori in mainstream settings. Particular dimensions of, and congruencies between both are explored. The first highlights the vital role of a kaumatua in facilitating and guiding the entire process; the second focuses on the role and experiences of a kaitakawaenga as he works collaboratively with whānau members to find resolution and restore harmony.

year: 2008