Results 21 to 30 of about 94,455 (294)

Leaf Vocabulary: Fine-Grained Leaf Image Retrieval Using Bag-of-Visual-Words Representation

open access: yes, 2022
This paper addresses the issue of fine-grained leaf image retrieval (FGLIR) which focuses on differentiating between different leaf cultivars within the same species. We investigate a novel bag-of-visual-words approaches (BoVW) to FGLIR.
Gao, Y, Wang, B, Chen, X
core   +1 more source

Leaf shape and leaf base of Vivaria calvasensis.

open access: yes, 2022
Leaf shape and leaf base of Vivaria calvasensis.
Fani Tinitana (13982606)   +4 more
core   +1 more source

Species Delimitation of Asteropyrum (Ranunculaceae) Based on Morphological, Molecular, and Ecological Variation

open access: yesFrontiers in Plant Science, 2021
Objectively evaluating different lines of evidence within a formalized framework is the most efficient and theoretically grounded approach for defining robust species hypotheses. Asteropyrum Drumm. et Hutch.
Shanmei Cheng   +9 more
doaj   +1 more source

Mutational spaces for leaf shape and size [PDF]

open access: yesHFSP Journal, 2008
A key approach to understanding how genes control growth and form is to analyze mutants in which shape and size have been perturbed. Although many mutants of this kind have been described in plants and animals, a general quantitative framework for describing them has yet to be established.
Bensmihen, Sandra   +5 more
openaire   +4 more sources

Automatic leaf segmentation and overlapping leaf separation using stereo vision

open access: yes, 2021
Farm management and crop quality assessment is becoming increasingly automated to keep up with demand. The physical examination of the plant leaves, stems and fruit can provide valuable information about a plant’s health. Automating the visual inspection
Zainab Mohammed Amean   +5 more
core   +1 more source

Seasonal Canopy Temperatures for Normal and Okra Leaf Cotton under Variable Irrigation in the Field

open access: yesAgriculture, 2016
Temperature affects a number of physiological factors in plants and is related to water use, yield and quality in many crop species. Seasonal canopy temperature, measured with infrared thermometers, is often used in conjunction with environmental factors
James R. Mahan   +2 more
doaj   +1 more source

Comparison of Two Simplified Versions of the Gielis Equation for Describing the Shape of Bamboo Leaves

open access: yesPlants, 2022
Bamboo is an important component in subtropical and tropical forest communities. The plant has characteristic long lanceolate leaves with parallel venation.
Weihao Yao   +6 more
doaj   +1 more source

Optimization of leaf morphology in relation to leaf water status: A theory

open access: yesEcology and Evolution, 2020
The leaf economic traits such as leaf area, maximum carbon assimilation rate, and venation are all correlated and related to water availability. Furthermore, leaves are often broad and large in humid areas and narrower in arid/semiarid and hot and cold ...
Junyan Ding   +2 more
doaj   +1 more source

A general model for describing the ovate leaf shape

open access: yes, 2021
Many plant species produce ovate leaves, but there is no general parametric model for describing this shape. Here, we used two empirical nonlinear equations, the beta and Lobry–Rosso–Flandrois (LRF) equations, and their modified forms (referred to as the
Schrader, J (15689678)   +8 more
core   +2 more sources

Divergent leaf shapes among Passiflora species arise from a shared juvenile morphology

open access: yesPlant Direct, 2017
Not only does leaf shape vary between Passiflora species, but between sequential nodes of the vine. The profound changes in leaf shape within Passiflora vines reflect the temporal development of the shoot apical meristem from which leaves are derived and
Daniel H. Chitwood, Wagner C. Otoni
doaj   +1 more source

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