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Task #13228 (new)

Opened 8 years ago

Last modified 8 years ago

Bug: "No Image" thumb rendered at aspect of underlying image

Reported by: khgillen Owned by: wmoore
Priority: minor Milestone: Unscheduled
Component: Web Version: OMERO-5.2.2
Keywords: n.a. Cc: ux@…, web-team@…
Resources: n.a. Referenced By: n.a.
References: n.a. Remaining Time: n.a.
Sprint: n.a.


When OMERO.web is rendering "No Image" as a thumbnail, it's rendered in the thumbnail view at the aspect ratio of the image that should be being displayed.

e.g. the attachment.

The "No Image" graphic is displayed at 195*325 which is what the thumbnail itself would have been, had it been possible to render a thumbnail for this image.

Unsure how to replicate this, other than a prod Nightshade image ID:


Here the 'No Image' is rendered at 40x65.

The underlying image is 195*325

Calculating the ratio:
195 : 325 = 40 : 66.666666666667

Attachments (1)

Webclient-no-image-20160511.png (223.8 KB) - added by khgillen 8 years ago.

Download all attachments as: .zip

Change History (3)

Changed 8 years ago by khgillen

comment:1 Changed 8 years ago by wmoore

Unfortunately this is quite tricky to fix, since the JavaScript? image sizing code has no connections to the thumbnail generation on the server. The browser can't tell whether the thumbnail is "No image" placeholder or the correct image.

comment:2 Changed 8 years ago by khgillen

Won't the server send the thumb at the correct aspect though?

So then you can scale based on the size of the image received from the server, as opposed to the size in the image metadata? or is that vastly more expensive?

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