Image

[fel_tj]

I am making this image gallery..and the user will be able to insert text into the image...
i have use the Imagettftext to output the text onto the image...This part i can make....
However I am trying to make it where the text will only appear at the empty space of the image...
It will automatically search for an empty space in the image to appear...
maybe it will search for a size of 5 pixels height, 10 pixels width of empty space to appear on the image...

How can we locate a certain part of an image??
Can anybody help me with this??
Thanx....

[weekender]

tricky one...

i know little about images but i know that to find areas of similar colour in a database you find areas of little gradient. The gradient is the rate at which contrast changes between two points or pixels, i.e. if two adjacent pixels have a steep gradient, then it is likely to be a line or an edge of some sort.

if you could find a way of reading an img pixel-by-pixel, then you might be able to measure the contrast and store the difference (greater difference = greater gradient) in an array, and then read the array to find 'flat' areas.

i'm giving myself a headache!!!

adam