Paul has a post on his blog about Black and White Conversion with GEGL’s c2g (color2gray) in GIMP. We had that here too, and way before him (because Joel blogged about it….). But he has looked deep into this and has helpful instructions about when and how to use it. Verdict: Quite useful, but not the tool to make all other monochrome conversion tools useless.
The image is stolen from his site.
Podcast Video (39,7 MB) [19:38m]: Play Now | Play in Popup | Download
Torrent: Download Joseph's images and HDR files: DownloadThis is a repost of Episode 84 – there seem to be some feed problems. there is no need for download if you have seen 84 already.
This week I start with a short introduction into autostereoscopic images, see two posts below. Then I cover the GEGL operation “c2g”, which converts acouloured image into a monochrome image with a lot of noise or other other effects. It’s a “try out” thing – up to now I have not found documentation. Perhaps one has to look into the source. Be warned – some parameters can kill the program.
Then Joseph tells us. how easy it is to make “HDR” images with QTPFSGUI. It’s not as complicated as I feared. I’ll try it soon myself. The website Joseph pointed me to is here.
00:28 Autostereoscopic images
02:10 Petersons image with GEGL c2g
03:30 c2g is used
06:30 Introducing Joseph
07:00 Introduction into HDR photography
09:00 QTPFSGui
10:00 Aligning the images
10:30 waiting….
11:20 Editing tools
12:10 Set the parameters
12:50 Save the image
13:00 Change the EV values
14:30 Tone mapping
15:40 saving in an LDR format (JPEG)
16:20 different effects
18:10 Web site with more info
This work is licensed under a
Creative Commons Attribution-Share Alike 2.0 Germany License.
Download the Video [19:38m]: Play Now | Play in Popup | Download Torrent: Download Joseph's images and HDR files: DownloadThis week I start with a short introduction into autostereoscopic images, see two posts below. Then I cover the GEGL operation “c2g”, which converts acouloured image into a monochrome image with a lot of noise or other other effects. It’s a “try out” thing – up to now I have not found documentation. Perhaps one has to look into the source. Be warned – some parameters can kill the program.
Then Joseph tells us. how easy it is to make “HDR” images. It’s not as complicated as I feared. I’ll try it soon myself. The website Joseph pointed me to is here.
00:28 Autostereoscopic images
02:10 Petersons image with GEGL c2g
03:30 c2g is used
06:30 Introducing Joseph
07:00 Introduction into HDR photography
09:00 QTPFSGui
10:00 Aligning the images
10:30 waiting….
11:20 Editing tools
12:10 Set the parameters
12:50 Save the image
13:00 Change the EV values
14:30 Tone mapping
15:40 saving in an LDR format (JPEG)
16:20 different effects
18:10 Web site with more info
This work is licensed under a
Creative Commons Attribution-Share Alike 2.0 Germany License.
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