title: Analysis of the SoftKinetic DepthSense for Range Imaging

authors: Cree, Michael J.

subjects: range imaging

abstract: We analyse the SoftKinetic DepthSense 325 range imaging camera for precision and accuracy in ranging out to 3 m. Flat planar targets (one a grey board, the other made from retroreflective material) are imaged at a variety of distances. Straight-forward image processing is used to identify the target and calculate the range and the root mean square variation in ranging to the target. It is found that inaccuracies in ranging of up to 2 cm occur to the grey board when imaging over 0 m to 1.5 m and the precision in ranging degrades from just below 1 cm at 0 m to almost 10 cm at 1.5 m. Similar inaccuracies occur with the retroreflective target but the precision is always under 1 cm even out to 3 m due to the strong signal return received from the target.

text: Analysis of the SoftKinetic DepthSense for Range Imaging We analyse the SoftKinetic DepthSense 325 range imaging camera for precision and accuracy in ranging out to 3 m. Flat planar targets (one a grey board, the other made from retroreflective material) are imaged at a variety of distances. Straight-forward image processing is used to identify the target and calculate the range and the root mean square variation in ranging to the target. It is found that inaccuracies in ranging of up to 2 cm occur to the grey board when imaging over 0 m to 1.5 m and the precision in ranging degrades from just below 1 cm at 0 m to almost 10 cm at 1.5 m. Similar inaccuracies occur with the retroreflective target but the precision is always under 1 cm even out to 3 m due to the strong signal return received from the target.

year: 2013

title: Barrett Bush management plan

authors: Bryan, Catherine Louise

subjects: Barrett Bush

abstract: The current vegetation pattern of Barrett Bush is the result of complex landscape changes of both recent and historic times. The most recent natural landscape changes occurred as the Waikato River meandered across the region, changing course over many years and depositing the alluvial plain that Barrett Bush grows on. More recent landscape changes have been the result of human activity as vegetation clearance and agricultural development has occurred throughout the district. Fortunately, Barrett Bush was set aside and the reserve now provides insight into original vegetation patterns as well as a refuge for biota characteristic of forests dominated by kahikatea.
Barrett Bush sits a shallow depression of an alluvial plain with a podocarp vegetation composition that is classed as a kahikatea semi-swamp forest (Clarkson et al. 2007). Clarkson et al. (2007) describe the typical natural vegetation of kahikatea semi-swamp forest:
“Semi-swamp forest dominated by kahikatea grew on the poorly drained shallow depressions. Several other species were present in varying amounts, including rimu, matai, pukatea, swamp maire, tawa, pokaka, and occasional cabbage tree. Prominent in the understorey were silver fern, mapou, hangehange, Coprosma areolata, and turepo, and sedges including Hymenophyllum demissum, hen and chicken fern, Astelia fragrans, A. grandis, and Microlaena avenacea.”

text: Barrett Bush management plan The current vegetation pattern of Barrett Bush is the result of complex landscape changes of both recent and historic times. The most recent natural landscape changes occurred as the Waikato River meandered across the region, changing course over many years and depositing the alluvial plain that Barrett Bush grows on. More recent landscape changes have been the result of human activity as vegetation clearance and agricultural development has occurred throughout the district. Fortunately, Barrett Bush was set aside and the reserve now provides insight into original vegetation patterns as well as a refuge for biota characteristic of forests dominated by kahikatea.
Barrett Bush sits a shallow depression of an alluvial plain with a podocarp vegetation composition that is classed as a kahikatea semi-swamp forest (Clarkson et al. 2007). Clarkson et al. (2007) describe the typical natural vegetation of kahikatea semi-swamp forest:
“Semi-swamp forest dominated by kahikatea grew on the poorly drained shallow depressions. Several other species were present in varying amounts, including rimu, matai, pukatea, swamp maire, tawa, pokaka, and occasional cabbage tree. Prominent in the understorey were silver fern, mapou, hangehange, Coprosma areolata, and turepo, and sedges including Hymenophyllum demissum, hen and chicken fern, Astelia fragrans, A. grandis, and Microlaena avenacea.”

year: 2012

title: The development of guidelines for indigenous research ethics in Aotearoa/New Zealand.

authors: Hudson, Maui

abstract: The development of Indigenous frameworks for research ethics has been a key component of progressing Indigenous aspirations for research around the world. They have provided a focal point for challenging approaches to research that prioritise non-Indigenous methods and values, and allow non-Indigenous researchers to claim expert status over Indigenous peoples, places and knowledges. The theme of self-determination underpins contemporary approaches to Indigenous development and the repositioning of state-Indigenous nation relationships. This paper describes the background, development, and implementation by Māori communities and researchers of an Indigenous ethical framework in Aotearoa/New Zealand.

text: The development of guidelines for indigenous research ethics in Aotearoa/New Zealand. The development of Indigenous frameworks for research ethics has been a key component of progressing Indigenous aspirations for research around the world. They have provided a focal point for challenging approaches to research that prioritise non-Indigenous methods and values, and allow non-Indigenous researchers to claim expert status over Indigenous peoples, places and knowledges. The theme of self-determination underpins contemporary approaches to Indigenous development and the repositioning of state-Indigenous nation relationships. This paper describes the background, development, and implementation by Māori communities and researchers of an Indigenous ethical framework in Aotearoa/New Zealand.

year: 2016