{"type":"rich","version":"1.0","title":"PS27:色阶","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/Xq7eVZ_ZnCk3ULPC/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/5eaede559fd99c293750b3c2\" frameborder=\"0\" allowfullscreen></iframe>"}