Diferenças

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--- interimage:attributes_description [2010/06/23 20:58] – rsilva
+++ interimage:attributes_description [2010/06/29 13:40] – rsilva
@@ Linha 58: / Linha 58: @@
  {{ :interimage:shapeindex.png }}
 Where P is the polygon perimeter and A is the area.
 ===== Spectral Statistical Attributes =====
-  * **Amplitude** - represents the difference between the maximum and minimum pixel values of a region for the given image band/channel.
+  * **Amplitude** - represents the difference between the maximum and minimum pixel values of an object for the given image layer **L**.
-  * **Brightness** -
+  * **Brightness** - represents the brightness of an image object.
   * **Correlation** - Correlation is a similarity measure between two data sets under an absolute scale between [-1,1]. It is calculated as shown by the next formula:
@@ Linha 88: / Linha 92: @@
-  * **Ratio** -
+  * **Ratio** - represents the amount that layer **L** contributes to the total brightness of an image object.
   * **StdDeviation** - The standard deviation represents the numerical data dispersion degree surrounding the mean. It is defined by: