将real类型图片编码成PNG的图片：
其原理在于以一定的编码方式，将real类型的实际高度信息转为16位的PNG图，同时，在最后一行将图片的编码方式存储下来，解码时先将编码方式读取，再将PNG格式深度图转为real类型的图片。
dev_clear_window ()dev_open_window (0, 0, 545, 400, 'black', WindowHandle)*定义编码格式X_SCALE:=1X_OFFSET:=0Y_SCALE:=1Y_OFFSET:=0Z_SCALE:=3000Z_OFFSET:=[]read_image (Image, '/12-03-15-34-58-155.tif')get_image_size (Image, Width, Height)*获取图像上最低点和最高点threshold (Image, Region, -999999, 999999)min_max_gray (Region, Image, 0, Z_MIN, Z_MAX, Range)Z_OFFSET:=Z_MIN*Z_SCALE*将图像转为16位图像gen_image_const (Image1, 'real', Width, Height)gen_image_proto (Image1, ImageCleared, Z_MIN)sub_image (Image, ImageCleared, ImageSub, Z_SCALE, 0)convert_image_type (ImageSub, Image2, 'uint2')*将两张图象融合gen_image_const (Image3, 'uint2', Width, Height+1)gen_rectangle1(Rectangle, 0, 0, Height-1, Width-1)get_region_points (Rectangle, Rows, Columns)get_grayval_interpolated (Image2, Rows, Columns, 'bilinear', Grayval)*存储编码方式set_grayval (Image3, Rows, Columns, Grayval)set_grayval (Image3, 1600, 0, X_OFFSET)set_grayval (Image3, 1600, 3, X_SCALE)set_grayval (Image3, 1600, 7, Y_OFFSET)set_grayval (Image3, 1600, 11, Y_SCALE)set_grayval (Image3, 1600, 15, Z_OFFSET)set_grayval (Image3, 1600, 19, Z_SCALE)write_image (Image3, 'png', 0, 'E:/Halcon程度代码/test.png')
PNG转real类型：
dev_clear_window ()dev_open_window (0, 0, 545, 400, 'black', WindowHandle)read_image (Test, 'E:/Halcon程度代码/test.png')get_image_size (Test, Width, Height)X_OFFSET:=[]X_SCALE:=[]Y_OFFSET:=[]Y_SCALE:=[]Z_OFFSET:=[]Z_SCALE:=[]*读取编码信息get_grayval (Test, Height-1, 0, X_OFFSET)get_grayval (Test, Height-1, 3, X_SCALE)get_grayval (Test, Height-1, 7, Y_OFFSET)get_grayval (Test, Height-1, 11, Y_SCALE)get_grayval (Test, Height-1, 15, Z_OFFSET)get_grayval (Test, Height-1, 19, Z_SCALE)Z_MIN:=1.0*Z_OFFSET/Z_SCALEcrop_part (Test, ImagePart, 0, 0, Width, Height-1)get_image_size (ImagePart, Width1, Height1)gen_rectangle1 (Rectangle, 0, 0, Height1-1, Width1-1)get_region_points (Rectangle, Rows, Columns)get_grayval_interpolated (ImagePart, Rows, Columns, 'bilinear', Grayval)Grayval1:=Grayval/Z_SCALE+Z_MINgen_image_const (Image, 'real', Width1, Height1)set_grayval (Image, Rows, Columns, Grayval1)
