Estimation of crown radii and crown projection area from stem size and tree position
نویسندگان
چکیده
منابع مشابه
Tree growth prediction using size and exposed crown area
We address the relationships between tree growth rate and growing environment for 21 co-occurring species. Tree growth rates are obtained from mapped plots at the Coweeta Long-Term Ecological Research site in the southern Appalachian Mountains. We employ high-resolution aerial photography to assess the light environment for trees growing in these plots, using exposed crown area (ECA) as a surro...
متن کاملComparison of Fixed-size and Variable-sized Windows for the Estimation of Tree Crown Position
Tree crown recognition with high spatial resolution remotely sensed imagery provides useful information relating the number and distribution of trees in a forest. A common technique used to identify tree locations uses a local maximum (LM) filter with a static-sized (user-specified) moving window. LM techniques operate on the assumption that high local radiance values represent the centroid of ...
متن کاملCrown area as an indicator of changing crown size in human pre-natal teeth.
This study deals with correlations of tooth size in human primary teeth. Traditionally, mesiodistal or buccolingual measurements have been used to express crown size. However, in this study, crown area was used as a reference parameter. Graphic reconstructions of 38 histologically prepared human fetuses with Crown-Rump Length (CRL) between 54 and 280 mm were used to obtain linear and area measu...
متن کاملModeling Caribbean Tree Stem Diameters from Tree Height and Crown Width Measurements
Regression models to predict diameter at breast height (DBH) as a function of tree height and maximum crown radius were developed for Caribbean forests based on data collected by the U.S. Forest Service in the Commonwealth of Puerto Rico and Territory of the U.S. Virgin Islands. The model predicting DBH from tree height fit reasonably well (R2 = 0.7110), with strongest in subtropical moist and ...
متن کاملFinding a Good Segmentation Strategy for Tree Crown Transparency Estimation
Image segmentation is a general term for delineating image areas into informational categories. A wide variety of general techniques exist depending on application and the image data specifications. Specialized algorithms, utilizing components of several techniques, usually are needed to meet the rigors for a specific application. This paper considers automated color image segmentation of folia...
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ژورنال
عنوان ژورنال: Annals of Forest Science
سال: 2003
ISSN: 1286-4560,1297-966X
DOI: 10.1051/forest:2003031