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2013 21st Signal Processing and Communications Applications Conference (SIU), 2013
Humans carry out object recognition as a very primitive task. However, knowing all the detailed information regarding an object is mostly not possible. Therefore, object recognition and linking the object to associated data is a popular research area. In this study, we have measured leaf recognition performances of different feature and data sets using
Cihan Sari +2 more
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Humans carry out object recognition as a very primitive task. However, knowing all the detailed information regarding an object is mostly not possible. Therefore, object recognition and linking the object to associated data is a popular research area. In this study, we have measured leaf recognition performances of different feature and data sets using
Cihan Sari +2 more
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Shaping up: the genetic control of leaf shape
Current Opinion in Plant Biology, 2004Leaf initiation at the shoot apical meristem involves a balance between cell proliferation and commitment to make primordia. Several genes, such as CLAVATA1, CLAVATA3, WUSCHEL, KNOTTED1, and PHANTASTICA, play key roles in these processes. When expressed in the leaf primordium, however, these 'meristem' genes can profoundly affect leaf shape and size ...
Sharon, Kessler, Neelima, Sinha
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Modelling leaf shape dynamics in rice
Njas - Wageningen Journal of Life Sciences, 2009 Modelling leaf shape is a helpful tool for designing optimal plant shape and visualizing plant growth. The objectives of this study were to characterize the changes in patterns of leaf growth characteristics during plant development, and to model the ...
Wenzhi Cao
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Classification of leaf shapes and estimation of leaf mass
2012 International Conference on Green and Ubiquitous Technology, 2012The goal of classifying leaves is to find potential correlation between visually-unrelated leaves and link them with leaf mass. We apply cluster analysis to distinguish over 20 typical kinds of leaves extracted from arbor species. This approach can preferably rule out odd-shaped leaves and classify them according to the metrics.
Yelin Hong, Zhengyu Chen, Junhua Qiu
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Current Opinion in Plant Biology, 2011
Leaves are formed from a group of initial cells within the meristem. One of the earliest markers of leaf initiation is the down-regulation of KNOX genes in initial cells. Polar auxin activity, MYB and LOB domain transcription factors function to keep KNOX out of the initiating leaf. If KNOX genes are expressed in initial cells, leaves fail to form.
Jihyun, Moon, Sarah, Hake
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Leaves are formed from a group of initial cells within the meristem. One of the earliest markers of leaf initiation is the down-regulation of KNOX genes in initial cells. Polar auxin activity, MYB and LOB domain transcription factors function to keep KNOX out of the initiating leaf. If KNOX genes are expressed in initial cells, leaves fail to form.
Jihyun, Moon, Sarah, Hake
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Automatic leaf shape category discovery
2016 23rd International Conference on Pattern Recognition (ICPR), 2016Categorical description of leaf shapes is of paramount importance in agriculture and plant sciences. Traditionally, these descriptions have been based on categorical systems proposed by domain experts. Despite the importance of these visual descriptive systems, these approaches may be limited by the representation of unknown shapes as expected in ...
Leonel Olivares +2 more
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Fractal analysis of leaf shapes
Canadian Journal of Forest Research, 1986An application of fractal mathematics to the analysis of leaf shapes is presented. Six leaves randomly selected from nine tree species were used in the study. A video imaging method together with microcomputer-based image processing was used to generate leaf outlines.
J. Vlcek, E. Cheung
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Search Image for Leaf Shape in a Butterfly
Science, 1978The butterfly Battus philenor forms search images for leaf shape when searching for its two larval host plants in southeast Texas. This behavior increases the rate of discovery of host plants and permits females to track changes in relative host plant suitability for larval growth. Apostatic selection resulting from
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Sinuosity Coefficients for Leaf Shape Characterisation
2015The design of an efficient and automated model for plant recognition and classification will give the possibility to people with little or no botanical knowledge to conduct field work. In this paper a feature for leaf shape analysis is presented: the Sinuosity coefficients.
Jules R. Kala +2 more
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Science, 2003
The flat shape of most leaves enables them to capture sunlight for photosynthesis more efficiently. But how do leaves develop their flat shape? In their Perspective, [McConnell and Barton][1] discuss new work ([ Nath et al ][2].) that reveals how the differential expression of certain genes within developing leaves of the snapdragon makes these leaves ...
J. R. McConnell, M. K. Barton
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The flat shape of most leaves enables them to capture sunlight for photosynthesis more efficiently. But how do leaves develop their flat shape? In their Perspective, [McConnell and Barton][1] discuss new work ([ Nath et al ][2].) that reveals how the differential expression of certain genes within developing leaves of the snapdragon makes these leaves ...
J. R. McConnell, M. K. Barton
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