WetCanvas
Home Member Services Content Areas Tools Info Center WC Partners Shop Help
Channels:
Search for:
in:

Welcome to the WetCanvas forums. You are currently viewing our boards as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please visit our help center.

Go Back   WetCanvas > The Learning Center > Computers and Technology for Artists
User Name
Password
Register Mark Forums Read

Salute to our Partners
WC! Sponsors

Our Sponsors
Reply  
 
Thread Tools Display Modes
  #1   Report Bad Post  
Old 02-11-2017, 06:31 PM
4ft4 4ft4 is offline
New Member
 
Join Date: Feb 2017
Posts: 3
 
Made my own Camera Lucida App

Hello guys,

this is my first post, so first of all: Hi guys Been lurking around for quite some time now and finally decided to create an account.
And if this isn't the right section for this, sorry in advance.

I'm into colored pencil, graphite and recently tried soft pastels and up until now i was always using the grid method to lay down the outlines, which works fine but sometimes it's really annoying.

During my master thesis, which has nothing to do with art, i had to to a lot of image processing (or still have to do, because I'm far from done) with opencv (I don't know if you have heard of it)

One night I had an idea, use my obtained knowledge and build some kind of "Camera Lucida App". After two weeks of "after-work coding" I'm in the middle of drawing my first drawing with my app - ok maybe app is misleading, it's running on my windows laptop - not my smartphone.

Anyways, so far it's working so well, that I thought I could share my progress with you guys.

The way it works is you attach a webcam to your pc and place it above your piece of paper, facing down. Now the paper is detected automatically and "transformed and warped" to fit the actual size of the paper, so no matter where the webcam is located, you always get the same image.
I dont know if that's understandable Anyways, in the next step the image you want to draw is placed on top of the webcam video feed and you can easily adjust the transparency and even zoom and pan around.

Now if you take a break or something, close everything and put your materials away and want to continue drawing the next day you can just calibrate it and because it detects the paper automatically and warps and fits it to the paper size and your reference photo, all your outlines will be in the right place.
It works really well.
Another scenario where you could use it is if you are almost finished with your drawing and want to check if all your proportions and colors are correct you do the exact same thing as above...

I'd love to show you some screenshots but I have to have 2 or more posts to add images/links, so maybe later

My question to you is if you are interested in such an app/program? Right now it doesn't really have a GUI because for me it's enough the way it is. But if there's interest I would add a GUI and more features.

What are your thoughts?

Regards
4ft4

Last edited by 4ft4 : 02-11-2017 at 06:50 PM.
Reply With Quote
  #2   Report Bad Post  
Old 02-11-2017, 08:00 PM
4ft4 4ft4 is offline
New Member
 
Join Date: Feb 2017
Posts: 3
 
Re: Made my own Camera Lucida App

Ok, I made the screenshots if anyone is interested.

Step 1: Automatically detect the paper:


Step 2: Image/Detected Paper is transformed and rectified (warped)


Step 3: Reference picture is placed onto the video from the webcam


Step 4: You can now adjust the transparency as you wish


Step 5: Zoom and pan

Last edited by 4ft4 : 02-11-2017 at 08:06 PM.
Reply With Quote
  #3   Report Bad Post  
Old 02-12-2017, 05:14 AM
Yorky's Avatar
Yorky Yorky is online now
Administrator
ORMSKIRK, Lancashire
 
Join Date: May 2000
Posts: 87,192
 
Hails from United Kingdom
Re: Made my own Camera Lucida App

Is this a digital art tool, are you drawing on your laptop/tablet?

Doug
Reply With Quote
  #4   Report Bad Post  
Old 02-12-2017, 08:01 AM
4ft4 4ft4 is offline
New Member
 
Join Date: Feb 2017
Posts: 3
 
Re: Made my own Camera Lucida App

Hi Doug, thanks for taking the time to reply.
No it's not a digital art tool, I'm sorry if it wasn't clear.
I'm drawing on real paper. I'm using a webcam to get what i'm drawing on my laptop, then my reference picture is overlaid live and digitally onto the video my webcam is recording.
This way I can draw the outlines on the "real paper" while watching the reference photo on my laptop screen.

The functionality can be best compared to the functionality of art projectors from Artograph, but you dont have to pay hundreds of dollars worth of equipment.

i hope this explanation makes it clearer.

4ft4
Reply With Quote
  #5   Report Bad Post  
Old 02-12-2017, 11:52 AM
Yorky's Avatar
Yorky Yorky is online now
Administrator
ORMSKIRK, Lancashire
 
Join Date: May 2000
Posts: 87,192
 
Hails from United Kingdom
Re: Made my own Camera Lucida App

Good idea, like using a Wacom pad in a way.

Doug
Reply With Quote
  #6   Report Bad Post  
Old 05-19-2017, 09:38 AM
lleroy's Avatar
lleroy lleroy is offline
Member
Varsenare (near Bruges)
 
Join Date: Jun 2004
Posts: 55
 
Hails from Belgium
Re: Made my own Camera Lucida App

Hi,

i'm interested! could I have a copy to try it out?
I have started coding a similar application for myself.

-- lode
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 05:37 AM.


© 2014 F+W All rights reserved.