crop an image

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

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
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
>

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
>>
>> --
>> PHP General Mailing List (http://www.php.net/)
>> To unsubscribe, visit: http://www.php.net/unsub.php
>>

got it, wrong command.
This is the right one:
imagecopy($outputImg, $inputImg, 0, 0, 0, $cropY, $srcX, $srcY);

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
>>
>> --
>> PHP General Mailing List (http://www.php.net/)
>> To unsubscribe, visit: http://www.php.net/unsub.php
>>

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
>>>
>>> --
>>> PHP General Mailing List (http://www.php.net/)
>>> To unsubscribe, visit: http://www.php.net/unsub.php
>>>
got it, sorrry for the confusion. I mixed up the lables.

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
>>>>
>>>> --
>>>> PHP General Mailing List (http://www.php.net/)
>>>> To unsubscribe, visit: http://www.php.net/unsub.php
>>>>
> got it, sorrry for the confusion. I mixed up the lables.
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php

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
>>>>>
>>>>> --
>>>>> PHP General Mailing List (http://www.php.net/)
>>>>> To unsubscribe, visit: http://www.php.net/unsub.php
>>>>>
>> got it, sorrry for the confusion. I mixed up the lables.
>>
>> --
>> PHP General Mailing List (http://www.php.net/)
>> To unsubscribe, visit: http://www.php.net/unsub.php
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php

On Nov 6, 2007, at 10:20 AM, Chris Bruce wrote:

> 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)

try imagecopyresampled($image_p, $image, 0, 0, 0, 0, 765, 810, 665,
1000)