Codition: 红色和绿色经COLOR COMPOSITE后，计算黄色的CLUSTER数目。

Macro
Sub Composite()
'<c>F
 ret = IpBlbShow(1)
 ret = IpBlbEnableMeas(BLBM_ALL, 0)
    ret = IpBlbEnableMeas(BLBM_AREAPOLY, 1)
    ret = IpBlbSetFilterRange(BLBM_AREAPOLY, 0.4, 40)
 ret = IpBlbEnableMeas(BLBM_DENSITY, 1)
 ret = IpSegShow(1)
 ret = IpSegSetAttr(SETCURSEL, 0)
 ret = IpSegSetAttr(CHANNEL, 0)
 ret = IpSegPreview(CURRENT_C_T)
 ret = IpSegShow(2)
 ret = IpSegSetAttr(SETCURSEL, 0)
 ret = IpSegPreview(CURRENT_C_T)
 ret = IpSegShow(1)
 ret = IpSegSetAttr(SETCURSEL, 0)
 ret = IpSegSetAttr(CHANNEL, 0)
 ret = IpSegPreview(CURRENT_C_T)
 ret = IpSegShow(2)
 ret = IpSegSetAttr(SETCURSEL, 0)
 ret = IpSegPreview(CURRENT_C_T)
 ret = IpSegSetAttr(SEGCLR_RED, 0)
 ret = IpSegSetAttr(SEGCLR_GREEN, 0)
 ret = IpSegSetAttr(SEGCLR_BLUE, 255)
 ret = IpSegPreview(CURRENT_C_T)
 ret = IpSegShow(1)
 ret = IpSegReset()
 ret = IpSegPreview(ALL_C_T)
 ret = IpSegSetRange(0, 255, 255)
 ret = IpSegSetRange(1, 225, 255)
 ret = IpSegSetRange(2, 0, 0)
 ret = IpSegPreview(ALL_C_T)
 ret = IpSegPreview(CURRENT_C_T)
 ret = IpSegShow(0)
 ret = IpBlbCount()
 ret = IpBlbUpdate(0)
 ret = IpBlbSaveData("",  S_HEADER+S_Y_AXIS+S_DDE)
End Sub