ImageMagick Perspective distortion draws shadow, how to prevent it












2















i have a problem with ImageMagick (PHP version), when i make perspective distortion for a photo, for some new posints (sharp shapes) it draws gray shadows on the result image, i think it's like 3D Shadows of the object, but i can not prevent it from coming in !



here the shadow come above the image



here is my code:



$controlPoints= array(

$oldPoints[0] , $oldPoints[1] ,  $newPoints[0] ,  $newPoints[1],

$oldPoints[2] , $oldPoints[3] ,  $newPoints[2] ,  $newPoints[3],

$oldPoints[4] , $oldPoints[5] ,  $newPoints[4] ,  $newPoints[5],

$oldPoints[6] , $oldPoints[7] ,  $newPoints[6] ,  $newPoints[7]);



$imagick = new imagick();

$imagick->readimageblob($data);

$imagick->setImageMatte(true);

$imagick->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);

$imagick->distortImage(  Imagick::DISTORTION_PERSPECTIVE, $controlPoints, TRUE );


could you please help me, is there any suggestions ?
I tried to remove this gray color from the image result, but it's not good solution if the original photo has the same color in it.



Regards



Hani






php imagemagick







share|improve this question




















  • 1





    The gray shape is the area above the "horizon" so it is outside the domain of the image. You need to add the PHP equivalent of -mattecolor none. See imagemagick.org/Usage/distorts/#horizon. Sorry I do not know Imagick well enough to know if it supports that equivalent.

    – fmw42
    Nov 27 '18 at 16:53











  • @fmw42 thank you so much. You answer has helped me. i just add the horizon color with: $imagick->setImageMatteColor("rgb(255,255,255,0)"); and it works :)

    – Wael
    Nov 27 '18 at 19:43


















2















i have a problem with ImageMagick (PHP version), when i make perspective distortion for a photo, for some new posints (sharp shapes) it draws gray shadows on the result image, i think it's like 3D Shadows of the object, but i can not prevent it from coming in !



here the shadow come above the image



here is my code:



$controlPoints= array(

$oldPoints[0] , $oldPoints[1] ,  $newPoints[0] ,  $newPoints[1],

$oldPoints[2] , $oldPoints[3] ,  $newPoints[2] ,  $newPoints[3],

$oldPoints[4] , $oldPoints[5] ,  $newPoints[4] ,  $newPoints[5],

$oldPoints[6] , $oldPoints[7] ,  $newPoints[6] ,  $newPoints[7]);



$imagick = new imagick();

$imagick->readimageblob($data);

$imagick->setImageMatte(true);

$imagick->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);

$imagick->distortImage(  Imagick::DISTORTION_PERSPECTIVE, $controlPoints, TRUE );


could you please help me, is there any suggestions ?
I tried to remove this gray color from the image result, but it's not good solution if the original photo has the same color in it.



Regards



Hani






php imagemagick







share|improve this question




















  • 1





    The gray shape is the area above the "horizon" so it is outside the domain of the image. You need to add the PHP equivalent of -mattecolor none. See imagemagick.org/Usage/distorts/#horizon. Sorry I do not know Imagick well enough to know if it supports that equivalent.

    – fmw42
    Nov 27 '18 at 16:53











  • @fmw42 thank you so much. You answer has helped me. i just add the horizon color with: $imagick->setImageMatteColor("rgb(255,255,255,0)"); and it works :)

    – Wael
    Nov 27 '18 at 19:43
















2












2








2








i have a problem with ImageMagick (PHP version), when i make perspective distortion for a photo, for some new posints (sharp shapes) it draws gray shadows on the result image, i think it's like 3D Shadows of the object, but i can not prevent it from coming in !



here the shadow come above the image



here is my code:



$controlPoints= array(

$oldPoints[0] , $oldPoints[1] ,  $newPoints[0] ,  $newPoints[1],

$oldPoints[2] , $oldPoints[3] ,  $newPoints[2] ,  $newPoints[3],

$oldPoints[4] , $oldPoints[5] ,  $newPoints[4] ,  $newPoints[5],

$oldPoints[6] , $oldPoints[7] ,  $newPoints[6] ,  $newPoints[7]);



$imagick = new imagick();

$imagick->readimageblob($data);

$imagick->setImageMatte(true);

$imagick->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);

$imagick->distortImage(  Imagick::DISTORTION_PERSPECTIVE, $controlPoints, TRUE );


could you please help me, is there any suggestions ?
I tried to remove this gray color from the image result, but it's not good solution if the original photo has the same color in it.



Regards



Hani






php imagemagick







share|improve this question
















i have a problem with ImageMagick (PHP version), when i make perspective distortion for a photo, for some new posints (sharp shapes) it draws gray shadows on the result image, i think it's like 3D Shadows of the object, but i can not prevent it from coming in !



here the shadow come above the image



here is my code:



$controlPoints= array(

$oldPoints[0] , $oldPoints[1] ,  $newPoints[0] ,  $newPoints[1],

$oldPoints[2] , $oldPoints[3] ,  $newPoints[2] ,  $newPoints[3],

$oldPoints[4] , $oldPoints[5] ,  $newPoints[4] ,  $newPoints[5],

$oldPoints[6] , $oldPoints[7] ,  $newPoints[6] ,  $newPoints[7]);



$imagick = new imagick();

$imagick->readimageblob($data);

$imagick->setImageMatte(true);

$imagick->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_TRANSPARENT);

$imagick->distortImage(  Imagick::DISTORTION_PERSPECTIVE, $controlPoints, TRUE );


could you please help me, is there any suggestions ?
I tried to remove this gray color from the image result, but it's not good solution if the original photo has the same color in it.



Regards



Hani






php imagemagick




php imagemagick






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 27 '18 at 9:08







Wael

















asked Nov 27 '18 at 8:51









WaelWael

2761313




2761313








  • 1





    The gray shape is the area above the "horizon" so it is outside the domain of the image. You need to add the PHP equivalent of -mattecolor none. See imagemagick.org/Usage/distorts/#horizon. Sorry I do not know Imagick well enough to know if it supports that equivalent.

    – fmw42
    Nov 27 '18 at 16:53











  • @fmw42 thank you so much. You answer has helped me. i just add the horizon color with: $imagick->setImageMatteColor("rgb(255,255,255,0)"); and it works :)

    – Wael
    Nov 27 '18 at 19:43
















  • 1





    The gray shape is the area above the "horizon" so it is outside the domain of the image. You need to add the PHP equivalent of -mattecolor none. See imagemagick.org/Usage/distorts/#horizon. Sorry I do not know Imagick well enough to know if it supports that equivalent.

    – fmw42
    Nov 27 '18 at 16:53











  • @fmw42 thank you so much. You answer has helped me. i just add the horizon color with: $imagick->setImageMatteColor("rgb(255,255,255,0)"); and it works :)

    – Wael
    Nov 27 '18 at 19:43










1




1





The gray shape is the area above the "horizon" so it is outside the domain of the image. You need to add the PHP equivalent of -mattecolor none. See imagemagick.org/Usage/distorts/#horizon. Sorry I do not know Imagick well enough to know if it supports that equivalent.

– fmw42
Nov 27 '18 at 16:53





The gray shape is the area above the "horizon" so it is outside the domain of the image. You need to add the PHP equivalent of -mattecolor none. See imagemagick.org/Usage/distorts/#horizon. Sorry I do not know Imagick well enough to know if it supports that equivalent.

– fmw42
Nov 27 '18 at 16:53













@fmw42 thank you so much. You answer has helped me. i just add the horizon color with: $imagick->setImageMatteColor("rgb(255,255,255,0)"); and it works :)

– Wael
Nov 27 '18 at 19:43







@fmw42 thank you so much. You answer has helped me. i just add the horizon color with: $imagick->setImageMatteColor("rgb(255,255,255,0)"); and it works :)

– Wael
Nov 27 '18 at 19:43














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