Iconic Space History Photos

Library of images to use as OFFIMG screens on the DM41X and DM42
Forum rules
Do you have a creative streak? Post your OFFIMG photos here.

Images MUST be in Windows-NT .bmp format at a resolution of 400x240 pixels and 1-bit colour depth or they will not be displayed by the DM42. Images that do not meet this requirement will be removed from the forum :)
dlachieze
Posts: 263
Joined: Thu May 04, 2017 12:20 pm
Location: France

Re: Iconic Space History Photos

Post by dlachieze »

A few HP related historic space pictures:

hp_space.jpg
hp_space.jpg (53.73 KiB) Viewed 3607 times
hp_space.zip
(21.7 KiB) Downloaded 154 times
DM42: 00425 - DM41X: β00066
User avatar
Walter
Posts: 1745
Joined: Tue May 02, 2017 11:13 am
Location: Close to FRA, Germany

Re: Iconic Space Photos

Post by Walter »

Walter wrote:
Mon Jan 15, 2018 9:36 pm
Nice! Just the earthrise over the moon is missing ...
I hate quoting myself. ;)
DM42 SN: 00041 β
WP 43S running on this device

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L
dlachieze
Posts: 263
Joined: Thu May 04, 2017 12:20 pm
Location: France

Re: Iconic Space Photos

Post by dlachieze »

Walter wrote:
Fri Feb 02, 2018 9:49 pm
Walter wrote:
Mon Jan 15, 2018 9:36 pm
Nice! Just the earthrise over the moon is missing ...
I hate quoting myself. ;)
I tried but was not able to create a nice picture of the earthrise over the moon. Just got plain black and white areas without any subtle details, this type of picture doesn't map well on 240x400 black&white.
DM42: 00425 - DM41X: β00066
User avatar
Walter
Posts: 1745
Joined: Tue May 02, 2017 11:13 am
Location: Close to FRA, Germany

Re: Iconic Space Photos

Post by Walter »

dlachieze wrote:
Fri Feb 02, 2018 10:04 pm
Walter wrote:
Fri Feb 02, 2018 9:49 pm
Walter wrote:
Mon Jan 15, 2018 9:36 pm
Nice! Just the earthrise over the moon is missing ...
I hate quoting myself. ;)
I tried but was not able to create a nice picture of the earthrise over the moon. Just got plain black and white areas without any subtle details, this type of picture doesn't map well on 240x400 black&white.
Anyway, thanks for trying! Merci bien!
DM42 SN: 00041 β
WP 43S running on this device

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L
Thomas Okken
Posts: 838
Joined: Tue May 02, 2017 5:48 pm
Location: United States
Contact:

Re: Iconic Space History Photos

Post by Thomas Okken »

There's room for improvement here, but here's my first try:

Image

http://thomasokken.com/misc/earthrise.exp.bmp

Converted image to greyscale, increased contrast a bit, then converted to 1-bit using clustered-dot dithering (pgmtopbm -c3).
This could probably be done better by brightening the moonscape a bit and then applying Floyd-Steinberg dithering instead of clustered dot.
dlachieze
Posts: 263
Joined: Thu May 04, 2017 12:20 pm
Location: France

Re: Iconic Space History Photos

Post by dlachieze »

Thanks Thomas! Well, Walter you see what I meant: all details are lost on the moon surface and without its characteristic color, the earth is not recognizable. At the end, for me, the converted picture is not related anymore to earth and moon.
DM42: 00425 - DM41X: β00066
DavidM
Posts: 9
Joined: Mon Nov 13, 2017 8:31 pm

Re: Iconic Space History Photos

Post by DavidM »

The loss of color does indeed remove a component of drama from this photo, but I believe for most of us the image is still iconic enough to tell its story.

I attempted some selective contrast adjustments before dithering in an attempt to retain some of the detail.

- David

Note: as requested, I've hosted these on a separate server. The firewall for that server may be blocking access for some of you, though. If someone else is willing to host them on a less restrictive server I'd be happy to update the image links.

BMP:
Image

The cropped source, if others want to give it a try (JPG):
Image
User avatar
Walter
Posts: 1745
Joined: Tue May 02, 2017 11:13 am
Location: Close to FRA, Germany

Re: Iconic Space History Photos

Post by Walter »

Dank Uw & thankyou, Thomas and David! This view is iconic enough indeed to transport its message even in b/w. Looks like Thomas created some extra stars for the background though. ;) Alas, in reality the universe is emptier than in StarWars by far. Which makes the picture even more meaningful (hi D.T., did you hear that? Still going to spoil this blue marble? And leave the dirty washing to us when you die? Totally reckless!).
DM42 SN: 00041 β
WP 43S running on this device

HP-35, HP-45, ..., HP-35S, WP 34S, WP 31S, DM16L
Thomas Okken
Posts: 838
Joined: Tue May 02, 2017 5:48 pm
Location: United States
Contact:

Re: Iconic Space History Photos

Post by Thomas Okken »

Walter wrote:
Sat Feb 03, 2018 9:14 pm
Looks like Thomas created some extra stars for the background though. ;)
Dithering artifacts. I should have tweaked the contrast some more to get the background even darker before converting to b&w. You should have seen my earlier attempts! :D
dlachieze
Posts: 263
Joined: Thu May 04, 2017 12:20 pm
Location: France

Re: Iconic Space History Photos

Post by dlachieze »

DavidM wrote:
Sat Feb 03, 2018 3:35 pm
Note: as requested, I've hosted these on a separate server. The firewall for that server may be blocking access for some of you, though.
I confirm the firewall restriction, I don't have access to your pictures.
DM42: 00425 - DM41X: β00066
Post Reply