by neufer » Tue Jul 03, 2012 5:44 pm
Chris Peterson wrote:LEK wrote:
Is it my monitor only, or does this image seem to out of register? I'm seeing a blue fringe on many of the objects.
Cassini's cameras can only image through one filter at a time, so color images are composites with a time lag between frames. Because the spacecraft is moving, the field of view is also changing with time. This is partially compensated for by changing the orientation of the camera between frames, and also by various image processing tricks during post processing on the ground. But the corrections are only partial, so most Cassini images have some degree of misregistration between color channels. It's usually only apparent at high contrast edges.
One can't properly compensate for
both Saturn
and the foreground Titan.
However, red/blue 3D glasses worn backwards (red to right eye) gives something of a 3D effect.
[quote="Chris Peterson"][quote="LEK"]
Is it my monitor only, or does this image seem to out of register? I'm seeing a blue fringe on many of the objects.[/quote]
Cassini's cameras can only image through one filter at a time, so color images are composites with a time lag between frames. Because the spacecraft is moving, the field of view is also changing with time. This is partially compensated for by changing the orientation of the camera between frames, and also by various image processing tricks during post processing on the ground. But the corrections are only partial, so most Cassini images have some degree of misregistration between color channels. It's usually only apparent at high contrast edges.[/quote]
One can't properly compensate for [b][u]both[/u][/b] Saturn [b][u]and[/u][/b] the foreground Titan.
However, red/blue 3D glasses worn backwards (red to right eye) gives something of a 3D effect.