Does anyone have some insight here? I am trying to crop an image. The
crop seems to almost work, but I get black bars on the image. Has
anyone had any experience with cropping images using the GD library?
Thanks.
Chris
On Nov 2, 2007, at 5:41 PM, Chris Bruce wrote:
What was the solution here? I am trying to crop but am getting a
black bar the same height as the crop at top. For this image I want
to crop 40 pixels off of the top:
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($jpegpath);
imagecopyresampled($image_p, $image, 0, 0, 0, 40, 765, 810, 665, 1000)
imagejpeg($image_p, $destImage, 75);
How do I merely crop x pixels from an image without having black
bars? I have tried the x coordinate too with the same result.
Thanks,
Chris
On Oct 31, 2007, at 8:58 AM, Merlin wrote:
Merlin schrieb:
Hi everybody,
I am still strugling with the crop problem.
It looks like it is not possible with PHP to do an
imagecopyresampled
and and imagecopy on the same image.
Here is what I try to do:
1: Resize image to 80px width and correct ratio
2: Crop from that image a 80x60 part
Both work for themselfes, but not together.
Does anybody see the problem?
$outputImg = ImageCreateTrueColor($maxX, $dstY);
imagecopyresampled($outputImg, $inputImg, $posX, $posY,0,0,
$picX, $picY, $srcX, $srcY);
$outputImg = ImageCreateTrueColor(80, 60);
imagecopy($outputImg, $inputImg, 0,0 , 0, 250, $picX, $picY);
If I leave the second imagecreate away, the image will be copied
into the bigger size and is not 80x60.
Thank you for any help.
Merlin
David Christopher Zentgraf schrieb:
Copying half a pixel? I dare say that's where the problem is.
Chrs,
Dav
On 31 Oct 2007, at 19:34, Merlin wrote:
Hi there,
I do have a small problem with the proportions of image copy
The image is originally vertical in 100px width and 141px height.
Now I want to crop it to 80 px width and 60px height. There
should be no black area and the proportions should be OK. That
means that I have to copy only part of the image. In this case
it would be 40.5px from above (141-60 / 2 ) and until 100.5
(40.5+60).
This would crop the middle part of the image.
Now with imagecoyresampled I can set the starting point of
40.5px, but not the ending point. The image will have a black
bottom.
Here is the code I am using:
imagecopyresampled($outputImg, $inputImg, 0,0, 0 , 40.5, 80,
60, $srcX, $srcY);
Thank you for any hint. Maybe somebody has a good idea on how
to crop that image.
Best regards,
Merlin
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got it, sorrry for the confusion. I mixed up the lables.
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