;显示直方图
!P.Multi = [0, 2, 1, 0, 1]
!P.FONT = 0
DEVICE,SET_FONT = "宋体*14"
window,XSIZE=600,YSIZE=300,TITLE='拉伸前后影像直方图对比',COLORS=2
; p1=plot(HISTOGRAM(forImage),TITLE = '原始影像直方图',XTITLE = '灰度值',YTITLE = '频数',$
; font_name= 'Microsoft Yahei',BACKGROUND_COLOR=[194, 217, 247])
; p2=plot(HISTOGRAM(afterImage),TITLE = '拉伸后影像直方图',XTITLE = '灰度值',YTITLE = '频数',$
; font_name= 'Microsoft Yahei',BACKGROUND_COLOR=[194, 217, 247])
PLOT, HISTOGRAM(forImage),/XSTYLE, YSTYLE=1,YRANGE=[0,600000],$
TITLE = '原始影像直方图', $
XTITLE = '灰度值',