Grayscale property blurr issue

[vishaltatva]

While using CSS grayscale and invert properties for image, the image is getting blurred, while original image is displayed perfectly

[Syndesi]

I think it's related to #195, but at this moment I can't test nor write any bugfix at all. Have you tried the following things?

• capture only the image in its original size
• capture only the image in its original size with CSS grayscale applied
• capture the image which is painted to a canvas