Web相关系数分析:. 第一个波段和其它波段的相关系数最低,表现出第一个波段和其他波段相比,图像中信息的重叠程度最低。. ENVI软件中计算结果如下. 通过以上计算发现,代码运行结果与ENVI中计算结果基本一致,通常情况下,我们认为: (1)、当相关系数为0时 ... Web最简单的图像分割方法是 二值化(Binarization) 。. 图像二值化( Image Binarization)就是将图像上的像素点的灰度值设置为0或255,也就是将整个图像呈现出明显的黑白效果的过程。. 二值图像每个像素只有两种取值:要么纯黑,要么纯白。. 由于二值图像数据足够 ...
1、IDL中一些重要的函数(1)_idl中where函 …
WebSep 4, 2024 · 如果看不出差别,可先在0~255之间对数据进行调整: IDL>west,0 IDL>image=Bytscl (image) IDL>tv,image IDL>west,1 IDL>tvscl,image 如果仍不能看到差 … Web将bytscl 函数与min 和max 关键字合并起来使用。 envi/idl 14.1波段运算 Ø 5)充分利用idl 功能强大的数组运算符 Ø idl 的数组运算符不但便于使用而且功能强大。它们允许对图像中的每一个像元进 行单独检验和处理,而且避免了for 循环的使用(不允许在波段运算中 ... saia motor freight memphis tn
IDL中的函数和过程 麻辣GIS
BYTSCL is often used to scale images into the appropriate range for 8-bit displays. In the following example, we create a 200x200 image, and then rescale the image pixels from 0 through 255. image = DIST (200) scaled_image = BYTSCL (image); Display the original and filtered images together WINDOW, 0, … See more Set this keyword to the maximum value of Array to be considered. If MAX is not provided, Arrayis searched for its maximum value. All values greater or equal to MAX are set equal to TOP in the result. Note: The … See more Set this keyword to the maximum value of the scaled result. If TOP is not specified, 255 is used. Note that the minimum value of the scaled result is … See more Set this keyword to the minimum value of Array to be considered. If MIN is not provided, Arrayis searched for its minimum value. All values less than or equal to MIN are set equal to 0 in … See more Set this keyword to cause the routine to check for occurrences of the IEEE floating-point values NaN or Infinity in the input data. Elements with the value NaN or Infinityare treated as … See more WebD = BYTSCL (DIST (256)) & TV, D ; Erase the screen: ERASE ; Use the position parameter to display a number of images in the; same window.; Display the image in the upper left … saia motor freight reviews