Badri, thank you for your answer.
I have modified the code(as you suggest).
Effect is much better, but did not reach the effect of the original(links:vcap_vdis)
vcap-vdis:
vcap-dei-vdis:
It is easy to find, if I add DEI link , Image is produced with some fuzzy.
I modified links To test: vcap- sclr-vdis. However ,Image quality like above(links: vcap-dei-vdis), and did not achieve the original effect.
Hope to provide better advice, thanks.