plz reply to my e-mail.

Every few months or so I check to see if there is anything that can actually manipulate image RASTER values client side. I read the post from Ray Cromwell of Timepedia, this is how I ended up here.

This would be the most basic functionality required in medical imaging applications. Changing contrast and windowing and adding look up tables (LUT) to apply colour maps to grey scale image data are absolutely fundamental and 90% of what raidiologist would want. Alpha channel compositions for overlays would be good also. Affine transforms etc would also be very useful but of secondary importance in this application.

I have played with dojo, this uses svg and I can move a region of interest within the brain resize and make overlays on top of a base image pasted as the background to an element in the web page. But there is still no client side image raster thresholding or colour LUT. To achieve that I must re-thresold the image server side and resend it, it does not scale up with users or image size – on anything but the fastest intranet response can be disappointing. A tool kit in Gears sounds like the answer but I am not sure how you can access the image object clinet side (something I think Ray was talking about?)

Please get intouch if there is any progress or if you think I can help in anyway to deliver this.

Trevor

I understand that sometimes you need to go beyond standards to get the functionality you need, but in this case there’s already an appropriate standards-track API.

-Ray

Also, I’d add a method to turn the resultant image into a data: URL

Personally, I’d like to see Gears supply this API along with a version of the WHATWG Canvas (+ transformed Text rendering), so that cross browser rendering would no longer require dealing with VML/SVG hacks, and instead you’d get an enhanced JS Canvas on Opera/IE/Firefox/Safari, with identical capability.

-Ray