An imaging script I wrote, please check this out

Mordecai

I have written a script called the Leonardo Image Functions Library, which is a library of image functions (obviously) that lets you do some pretty complex stuff with simple functions. This allows you to edit images easier than you would with the normal GD functions. Please check it out here.
Also, please give your feedback. You can find ways to contact me in my profile, or send me a mesage.

If you have ideas for the next version, please contact me. Currently, I am working on a beveling function and a gradient line function.

Download the code, examples, and documentation here.

Edit: updated links

andrin

Nice work Mordecai :-) Keep the spirit up!

dar-k

Nice stuff u made there.
Thumbs up!

Bunkermaster

what GD version does it use? 1.x or 2.x?

BuzzLY

RTFM, Bunkermaster 😃 :p

PyroX

Now write a function to do masked overlays.

overlay(imageA, imageB, maskColor, X, Y)

Mordecai

Ooh, good Idea, PyroX.
Bunker, it can use any version of GD. I tested it on GD 1.

Bunkermaster

Originally posted by BuzzLY
RTFM, Bunkermaster 😃 :p

LOL BUSTED

OK you got me mate 😉

thoand

Hi,
Nice work,
I am also working on some image functions and working on some GUIs for doing the work more intuitive

Check out this thread,

http://www.phpbuilder.com/board/showthread.php?postid=10344030#post10344030

Or go to my site directly here

regards Thomas A.

Mordecai

Yeah, I wrote a GD script that works with that. 🙂

zeberdeee

As you guys seem to know about the GD lib. Can anyone show me a working example of using the imageinterlace() function. I have a program the i am trying to output uploaded photo's which i assumed could be displayed fuzzy first before true image appears, (have seen this on sites). I thought to create the image using imageinterlace() would work, bit it appears the same when the browser loads. a small snippet of my code:

ImageInterlace($img,1); // turn on interlace
ImageJPEG($img,"$IMG_ROOT/$dest_file_prefix$file_name", $JPG_QUALITY); // create image.

I would not bother people without trying to find the answers in manuals, but the function is not really documented very well.
Thanks

Mordecai

You can't use imageinterlace() and imagejpeg() together. An interlaced JPEG will not load in the conventional interlaced style, but rather when it's completed. Normally, a JPEG loads from top left to bottom right in horizontal chunks. An interlaced JPEG will not show anything (it will return headers) until it's completely downloaded.

zeberdeee

Thanks for that, u are right. That is what was happening.
10 points to griffindore.

toxr

Great set of functions!

Is there anyway to change the contrast of an image with GD (and PHP)? I've made a tool to make one of those "Ctrl+A"-images you've probably seen, and to change contrast would make it even better. I know that it's possible with ImageMagick, but I'd preferred to not use an external resource.

Oh, and the code is avaliable here: http://nopaste.bsdguru.net/nopaste.php?id=257&display=extended

thessoro

Da Vinci would be proud... :p

great work

Mordecai

Originally posted by toxr
Great set of functions!

Is there anyway to change the contrast of an image

Hmm... what exactly is contrast? I'm honestly not sure what exactly it does. I know it supposedly makes black darker and white lighter, but I don't see how that works...

I've seen a sharpening script posted on here, however... would that be of any interest to you?

jimson

maybe a paintshop pro will make u understand... 🙂

toxr

It's increasing the difference between bright and dark pixels - making the dark ones even darker, and the bright even brighter.

Mordecai

What defines "dark" and "bright" pixels? I know what it's theoretically meant to do, but I don't see how doing that will make an image look as it does. It seems to just make things lighter or darker, but I guess it's just bringing everything to an equilibrium.

Oh well. I don't know of a script for doing that, perhaps you or I could write one, of course, I need to know the logic behind it first.

BuzzLY

I'm not sure exactly how it works, but contrast basically changes adjacent pixels to be further apart in their respective RGB values, or closer together.

I did an experiment in Photoshop, with a graphic that had Red, Orange, Yellow, Green, Blue, Purple, and Red -- with shades in between. Changing the contrast didn't change the core colors at all, but the mixes between did change. When contrast was at +100, all you had were the 6 colors in bars. When at -100, it was an almost perfectly uniform shade of gray all the way across, #808080.

I think the algorithm is complicated. A google search did little to turn up anything useful. You may want to simply use ImageMagick.