Thread | Last post | Posts | Views |
Control of electron-multiplying gain in EMCCD cameras
An Electron-Multiplying CCD (EMCCD) uses an electron multiplying structure built into the sensor to obtain high sensitivity in l... |
16 year | 1 | 1986 |
Darkfield Subtraction
OK, now I want to go even further :-) and reduce the vertical striations that are due I suppose to the structure of the C... |
17 year | 2 | 3196 |
How do I write_Images every n seconds [2]
I can use Write_Images to record every frame as a separate image, but I have a camera that integrates over time up to 10sec so t... |
16 year | 2 | 1753 |
Where is the hot pixel filter (salt&pepper) ? [5]
Sorry, I hit the wrong button and posted my "Hot pixel" GIFs under Unknown Title. Here they are again for those following this... |
16 year | 6 | 3610 |
Where is the hot pixel filter (salt&pepper) ? [4]
Thanks STeven. Actually I am not looking at stars, but at much more diffuse blobs in a neutron diffraction pattern, so that will... |
16 year | 6 | 3610 |
Where is the hot pixel filter (salt&pepper) ? [2]
Here are a couple of examples of hot pixel background patterns from long exposures with completely different cameras, an EMCCD a... |
16 year | 6 | 3610 |
Where is the hot pixel filter (salt&pepper) ?
CCD's show "dark current" noise with longer exposures when warm, which shows up as isolated bright "hot pixels". In low lig... |
16 year | 6 | 3610 |
Where is the hot pixel filter (salt&pepper) ? [7]
That was quick work STeven. Thanks. Your documentation is also very clear and precise. A couple of comments. First a trivial one... |
16 year | 6 | 3610 |
Re: Integrate Module Updated [6]
Good work STeven. I downloaded the new version and tested it with my low-light Philips WebCam SPC-900NC. It now resets when you ... |
17 year | 8 | 5177 |
Low-light integration and bright pixels [3]
Thanks Steven. First let me show what I am trying to do. I have a camera that integrates electronically (Watec WAT-120N) and am ... |
17 year | 8 | 5177 |
Low-light integration and bright pixels
Image integration under low-light conditions with uncooled CCD's produces a few very bright (noisy) pixels (example). Bu... |
17 year | 8 | 5177 |
Re:Normalization Fixed [8]
That's it STeven ! With approx. the same test scene as before I now get the following for 40-30 normalisation... |
17 year | 8 | 5177 |
Binning pixels to increase signal [9]
...And of course you can also do 1D-binning using the scale model in RoboRealm. Sorry, I didn't look at your Scale module caref... |
16 year | 9 | 3842 |
Binning pixels to increase signal [8]
Thanks for confirming that STeven. Square binning is indeed generally sufficient for binning to improve images with faint featur... |
16 year | 9 | 3842 |
Binning pixels to increase signal [6]
I took a while to find an example that other people could try, and finally it did not seem as useful as I had expected, though i... |
16 year | 9 | 3842 |
rotate and mosaic [10]
Ok, to avoid the shear I must simply choose the Mosaic Image Size sufficiently large... my mistake. | 16 year | 13 | 2658 |
rotate and mosaic [9]
I meant "...are no longer limited to 320x240..." ... |
16 year | 13 | 2658 |
rotate and mosaic [8]
This does look promising. I see that the mosaic images are no longer limited to 230x240 in the latest RoboRealm 1.8.10.3; this i... |
16 year | 13 | 2658 |
Pincushion/Barrel/Perspective Distortion Correction [6]
Yep. It now works very well. Thanks STephen. I also have Mosaic working on my home machine, so maybe that was the same memory bu... |
16 year | 13 | 8291 |
rotate and mosaic [5]
Thanks, that looks like an interesting program, and stitching automatically is a big advance on other stitching programs I've t... |
16 year | 13 | 2658 |
|
New Post |