Skip to main content
Solved

Converting RLC files


mmacfarlane
Contributor
Forum|alt.badge.img+7

I've recently come across a number of these files that look like they are from the early 1990s. AutoCAD can open them, but I was hoping to batch convert them into either TIF or PDF format.

I used a Data File Reader, set to binary and found that the first 4 bytes describe the dimensions of the image, but after that, I'm stuck.

Best answer by jdh

I think rlc files are Scanner Graphic Files, essential 1-bit per pixel images directly output by certain scanners back in the day.

View original
Did this help you find an answer to your question?

mark2atsafe
Safer
Forum|alt.badge.img+40

I don't see anything recorded in our internal systems about "rlc" (no bugs, no enhancement requests, no support issues), and not a lot more online. But if I'm reading this correctly, rlc is not so much a format as a type of compression, so you might try reading it with a few other formats. INGR is the only format I can find that mentions rlc in relation to, so maybe worth a try using that?

Otherwise can you post a file here for us to inspect?


jdh
Contributor
Forum|alt.badge.img+28
  • Contributor
  • June 19, 2017

I think rlc files are Scanner Graphic Files, essential 1-bit per pixel images directly output by certain scanners back in the day.


mmacfarlane
Contributor
Forum|alt.badge.img+7
mark2atsafe wrote:

I don't see anything recorded in our internal systems about "rlc" (no bugs, no enhancement requests, no support issues), and not a lot more online. But if I'm reading this correctly, rlc is not so much a format as a type of compression, so you might try reading it with a few other formats. INGR is the only format I can find that mentions rlc in relation to, so maybe worth a try using that?

Otherwise can you post a file here for us to inspect?

Unfortunately, I don't think I'm allowed to post the files publicly. On your suggestion, I tried Integraph Raster, to no avail.

 

 


mark2atsafe
Safer
Forum|alt.badge.img+40
jdh wrote:

I think rlc files are Scanner Graphic Files, essential 1-bit per pixel images directly output by certain scanners back in the day.

I think you're right. I found an example file online and can look at it in a text/hex editor, but it means very little to me. Sorry. I guess we could file this as an idea or an enhancement request, but I doubt we'd do anything with this format.

 

 


mmacfarlane
Contributor
Forum|alt.badge.img+7
mark2atsafe wrote:
I think you're right. I found an example file online and can look at it in a text/hex editor, but it means very little to me. Sorry. I guess we could file this as an idea or an enhancement request, but I doubt we'd do anything with this format.

 

 

It seems to be a pretty obscure format. Since AutoCAD can still open them, I can print to PDF individually. I doubt there'll ever be more than the few dozen I recently came across.

 

 


Reply


Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings