Reprocessing Historical Images - II, Restoring images from antiquated and/or poor quality sources Options

[tedstryk]

I figure that it is time for another thread like this. I still find it astonishing to see the versions of a lot of images that are reproduced over and over again. For example, this is the last mosaic of Triton taken before the close encounter began. The version on the Planetary Photojournal is on the left, my version on the right. Clearly, this image was produced as part of the "instant science" campaign. They did a superb job getting images to the public in a speedy manner, but they are extremely rough, since the team was busy running the spacecraft. However, it is this version that keeps being recycled. Worse, the version on the photojournal is clearly scanned from a printed copy, causing further degradation.



Here is a similar comparison, this time using Proteus (still 1989N-1 on the Planetary Photojournal!).



This discussion started in the thread about Viking crescents but was getting off topic, so I thought I would start a new thread here.

[vk3ukf]

Yes, that's the d version alright, the h version looks like a top end stretch of the numbers, a variation of 1 in brightness stretched in that area.

I recently found python code, had a go and made a XP gui for Bill Allen's PDS *.img file display, save and header scripts.
I found that manipulating images in python is easier than using delphi 7, but I still need delphi for the gui.

I liked the LIDAR imaging, if you played those in a movie, is it like a waterfall display, such as I have seen on some audio and HAM software.

Edit: thanks for the URL, I updated the references.

So what did I make?, is it a good mix or a bit of a furphy?