Foto upload vs kwaliteit
Voorbeeld mijn scriptje:
Voorbeeld Flickr:
Ik gebruik deze: thumbnail class en gebruik deze code om te uploaden:
Code (php)
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<?php
include('includes/classes/thumbnail.php');
$path = 'afbeeldingen/';
$image_width = 500;
$thumbnail_size = 100;
//-- form's been posted, size is bigger than 25kb, tmp file exists and it's a jpg, jpeg, png or gif file
if ($_SERVER['REQUEST_METHOD'] == 'POST' && $_FILES['userfile']['size'] > 25 && is_uploaded_file($_FILES['userfile']['tmp_name']) && (strtolower(substr($_FILES['userfile']['name'], -3)) == 'jpg' || strtolower(substr($_FILES['userfile']['name'], -4)) == 'jpeg' || strtolower(substr($_FILES['userfile']['name'], -3)) == 'png' || strtolower(substr($_FILES['userfile']['name'], -3)) == 'gif'))
{
$filename = date('Y-m-d') . '_' . $_SESSION['id'] . '_' . substr($_FILES['userfile']['name'], 0, 30);
//--- upload image naar $path
move_uploaded_file($_FILES['userfile']['tmp_name'], $path . $filename);
//--- resize to max width
$thumb=new thumbnail($path . $filename); // generate image_file, set filename to resize
//$thumb->size_width($thumbnail_size); // set width for thumbnail, or
//$thumb->size_height($thumbnail_size); // set height for thumbnail, or
$thumb->size_auto(500); // set the biggest width or height for thumbnail
$thumb->jpeg_quality(100);
$thumb->show(); // show your thumbnail
//$thumb->save("./huhu.jpg"); // save your thumbnail to file
}
else
{
echo '<form method="post" action="' . $_SERVER['PHP_SELF'] . '" enctype="multipart/form-data">';
echo '<p>';
echo '<input type="file" name="userfile" value="" /><br />';
echo '<input type="submit" name="submit" value="Upload\'n!" />';
echo '</p>';
echo '</form>';
}
?>
include('includes/classes/thumbnail.php');
$path = 'afbeeldingen/';
$image_width = 500;
$thumbnail_size = 100;
//-- form's been posted, size is bigger than 25kb, tmp file exists and it's a jpg, jpeg, png or gif file
if ($_SERVER['REQUEST_METHOD'] == 'POST' && $_FILES['userfile']['size'] > 25 && is_uploaded_file($_FILES['userfile']['tmp_name']) && (strtolower(substr($_FILES['userfile']['name'], -3)) == 'jpg' || strtolower(substr($_FILES['userfile']['name'], -4)) == 'jpeg' || strtolower(substr($_FILES['userfile']['name'], -3)) == 'png' || strtolower(substr($_FILES['userfile']['name'], -3)) == 'gif'))
{
$filename = date('Y-m-d') . '_' . $_SESSION['id'] . '_' . substr($_FILES['userfile']['name'], 0, 30);
//--- upload image naar $path
move_uploaded_file($_FILES['userfile']['tmp_name'], $path . $filename);
//--- resize to max width
$thumb=new thumbnail($path . $filename); // generate image_file, set filename to resize
//$thumb->size_width($thumbnail_size); // set width for thumbnail, or
//$thumb->size_height($thumbnail_size); // set height for thumbnail, or
$thumb->size_auto(500); // set the biggest width or height for thumbnail
$thumb->jpeg_quality(100);
$thumb->show(); // show your thumbnail
//$thumb->save("./huhu.jpg"); // save your thumbnail to file
}
else
{
echo '<form method="post" action="' . $_SERVER['PHP_SELF'] . '" enctype="multipart/form-data">';
echo '<p>';
echo '<input type="file" name="userfile" value="" /><br />';
echo '<input type="submit" name="submit" value="Upload\'n!" />';
echo '</p>';
echo '</form>';
}
?>
Doe ik iets verkeerd? Ik heb het ook met andere scriptjes geprobeerd, maar de kwaliteit blijft ook daar niet naar mijn standaarden :) :) Heeft iemand tips hoe dit wel aan te pakken? Want ik wil geen vervormde foto's op mijn website.
Gewijzigd op 01/01/1970 01:00:00 door Ronald
Code (php)
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<?php
function ImageCopyResampleBicubic($dst_img, $src_img, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h)
{
/*
* Port to PHP by John Jensen July 10 2001 -- original code
* (in C, for the PHP GD Module) by [email protected]
*/
for ($i = 0; $i < 256; $i++)
{
// get pallete. Is this algoritm correct?
$colors = ImageColorsForIndex ($src_img, $i);
ImageColorAllocate($dst_img, $colors['red'], $colors['green'], $colors['blue']);
}
$scaleX = ($src_w - 1) / $dst_w;
$scaleY = ($src_h - 1) / $dst_h;
$scaleX2 = $scaleX / 2.0;
$scaleY2 = $scaleY / 2.0;
for ($j = $src_y; $j < $dst_h; $j++)
{
$sY = $j * $scaleY;
for ($i = $src_x; $i < $dst_w; $i++)
{
$sX = $i * $scaleX;
$c1 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX, (int) $sY + $scaleY2));
$c2 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX, (int) $sY));
$c3 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX + $scaleX2, (int) $sY + $scaleY2));
$c4 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX + $scaleX2, (int) $sY));
$red = (int) (($c1['red'] + $c2['red'] + $c3['red'] + $c4['red']) / 4);
$green = (int) (($c1['green'] + $c2['green'] + $c3['green'] + $c4['green']) / 4);
$blue = (int) (($c1['blue'] + $c2['blue'] + $c3['blue'] + $c4['blue']) / 4);
$color = ImageColorClosest ($dst_img, $red, $green, $blue);
ImageSetPixel ($dst_img, $i + $dst_x, $j + $dst_y, $color);
}
}
}
?>
function ImageCopyResampleBicubic($dst_img, $src_img, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h)
{
/*
* Port to PHP by John Jensen July 10 2001 -- original code
* (in C, for the PHP GD Module) by [email protected]
*/
for ($i = 0; $i < 256; $i++)
{
// get pallete. Is this algoritm correct?
$colors = ImageColorsForIndex ($src_img, $i);
ImageColorAllocate($dst_img, $colors['red'], $colors['green'], $colors['blue']);
}
$scaleX = ($src_w - 1) / $dst_w;
$scaleY = ($src_h - 1) / $dst_h;
$scaleX2 = $scaleX / 2.0;
$scaleY2 = $scaleY / 2.0;
for ($j = $src_y; $j < $dst_h; $j++)
{
$sY = $j * $scaleY;
for ($i = $src_x; $i < $dst_w; $i++)
{
$sX = $i * $scaleX;
$c1 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX, (int) $sY + $scaleY2));
$c2 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX, (int) $sY));
$c3 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX + $scaleX2, (int) $sY + $scaleY2));
$c4 = ImageColorsForIndex ($src_img, ImageColorAt ($src_img, (int) $sX + $scaleX2, (int) $sY));
$red = (int) (($c1['red'] + $c2['red'] + $c3['red'] + $c4['red']) / 4);
$green = (int) (($c1['green'] + $c2['green'] + $c3['green'] + $c4['green']) / 4);
$blue = (int) (($c1['blue'] + $c2['blue'] + $c3['blue'] + $c4['blue']) / 4);
$color = ImageColorClosest ($dst_img, $red, $green, $blue);
ImageSetPixel ($dst_img, $i + $dst_x, $j + $dst_y, $color);
}
}
}
?>
En heb in de class nu dus staan:
Code (php)
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<?php
$this->ImageCopyResampleBicubic ($this->img["des"], $this->img["src"], 0, 0, 0, 0, $this->img["lebar_thumb"], $this->img["tinggi_thumb"], $this->img["lebar"], $this->img["tinggi"]);
?>
$this->ImageCopyResampleBicubic ($this->img["des"], $this->img["src"], 0, 0, 0, 0, $this->img["lebar_thumb"], $this->img["tinggi_thumb"], $this->img["lebar"], $this->img["tinggi"]);
?>
# 11 March 2003
gebruik een recente, en vervang imagecopyresized door imagecopyresampled. Dat zorgt voor betere kwaliteit