Improving Object Localization with Fitness NMS and Bounded IoU Loss

We demonstrate that many detection methods are designed to identify only a sufficently accurate bounding box, rather than the best available one. To address this issue we propose a simple and fast modification to the existing methods called Fitness NMS. This method is tested with the DeNet model and obtains a significantly improved MAP at greater localization accuracies without a loss in evaluation rate, and can be used in conjunction with Soft NMS for additional improvements. Next we derive a novel bounding box regression loss based on a set of IoU upper bounds that better matches the goal of IoU maximization while still providing good convergence properties. Following these novelties we investigate RoI clustering schemes for improving evaluation rates for the DeNet wide model variants and provide an analysis of localization performance at various input image dimensions. We obtain a MAP of 33.6%@79Hz and 41.8%@5Hz for MSCOCO and a Titan X (Maxwell). Source code available from: https://github.com/lachlants/denetComment: CVPR2018 Main Conference (Poster

The History of Raymond, Alberta, Canada

The intent of this study was to preserve the historical heritage of a small Canadian community. The thought that in the strength of a community lies the strength of a nation. The following things were taken into consideration in giving a complete picture of Raymond: (l) The early history which entailed the parts that the Indians, the whoop-up saga, the trader, the trapper, and the Northwest Mounted Police played in the development of Western Canada and Alberta. (2) The desire of the Government to open the western prairies for settlement which brought the Mormon people who were seeking new homes . With the Mormons came the controversy of polygamy, a problem that had to be resolved. (3) The influence and contribution of the Jesse Knight family in the development of Raymond and the surrounding area. (4) The development of Raymond as a prosperous and progressive community involving the sugar beet industry, farming, irrigation, ranching, and the eventual growth of businesses, educational facilities, and religious activities. The research and sources used for the desired information carne from original diaries , micro- films, newspapers , interviews, correspondence, and books. The findings and feelings of the residents of Raymond express their pride in their community and their desire to have their stories preserved

Concern of photosensitive seizures evoked by 3D video displays or virtual reality headsets in children: Current perspective

This review assesses the risk of a photic-induced seizure in a child during viewing of 3D (binocular 3 dimensional, stereoscopic) movies or games, either on standard video displays or when wearing a virtual reality (VR) headset. Studies published by pediatric epilepsy experts emphasize the low risk of 3D viewing even for children with known photosensitive epilepsy (PSE). The low incidence of PSE is noteworthy because the number of hours devoted to 2D or 3D screen viewing and/or VR headset use by children worldwide has increased markedly over the last decade. The medical literature does not support the notion that VR headset use poses a risk for PSE

Visual pathway function and structure in Wolfram syndrome: Patient age, variation and progression

Background/aimsTo report alterations in visual acuity and visual pathway structure over an interval of 1–3 years in a cohort of children, adolescents and young adults who have Wolfram syndrome (WFS) and to describe the range of disease severity evident in patients with WFS whose ages differed by as much as 20 years at first examination.MethodsAnnual, prospective ophthalmological examinations were performed in conjunction with retinal nerve fibre layer (RNFL) analysis. Diffusion tensor MRI-derived fractional anisotropy was used to assess the microstructural integrity of the optic radiations (OR FA).ResultsMean age of the 23 patients with WFS in the study was 13.8 years (range 5–25 years). Mean log minimum angle resolution visual acuity was 0.66 (20/91). RNFL thickness was subnormal in even the youngest patients with WFS. Average RNFL thickness in patients with WFS was 57±8 µ or ~40% thinner than that measured in normal (94±10 µ) children and adolescents (P&lt;0.01). Lower OR FA correlated with worse visual acuity (P=0.006). Subsequent examinations showed declines (P&lt;0.05) in visual acuity, RNFL thickness and OR FA at follow-up intervals of 12–36 months. However, a wide range of disease severity was evident across ages: some of the youngest patients at their first examination had deficits more severe than the oldest patients.ConclusionThe genetic mutation of WFS causes damage to both pregeniculate and postgeniculate regions of the visual pathway. The damage is progressive. The decline in visual pathway structure is accompanied by declines of visual function. Disease severity differs widely in individual patients and cannot be predicted from their age.</jats:sec

Interactions between the developmental and adult social environments mediate group dynamics and offspring traits in Drosophila melanogaster

The authors acknowledge Prof Stephen J Simpson and Prof Phil Taylor for the support during the experiments. J.M. was funded by a DPhil scholarship from the Brazilian National Council for Scientific and Technological Development (CNPq). S.W. is funded by BBSRC (BB/K014544/1) fellowship.Peer reviewedPublisher PD