<?php
$cmd = "$input -scale 133x100";
exec("convert $cmd scale.jpg");
?>
Scale.
The -scale option uses a simpler, faster algorithm than -resize, and it ignores the -filter setting if one is present. Offsets, if present in the geometry string, are ignored, and the -gravity option has no effect.
<?php
$cmd = "$input -scale 25% -scale 400%";
exec("convert $cmd scale2.jpg");
?>
An interesting effect.
<?php
$cmd = " $input -channel RGB -separate ";
exec ("convert $cmd separate.png");
?>
Separate an image channel into a grayscale image. Specify the channel with -channel.
<?php
$cmd = "$input -sepia-tone \"80%\" ";
exec("convert $cmd sepia-tone.jpg");
?>
Sepia effect.
<?php
$cmd = "$input -shade 20x20";
exec("convert $cmd shade.jpg");
?>
Shade the image using a distant light source.
<?php
$cmd = "$input ( +clone -background black -shadow 80x4+5+5 )".
" +swap -background none -layers merge +repage ";
exec("convert $cmd shadow.png");
?>
Simulate an image shadow. - to retain the transparency of the shadow save as a png.
<?php
$cmd = "$input -shave 40x20";
exec("convert $cmd shave.jpg");
?>
Shave pixels from the image edges.
<?php
$cmd = "$input -background NavajoWhite -shear 15x15";
exec("convert $cmd shear.jpg");
?>
Shear the image along the x-axis and/or y-axis. - the colour of the parts of the canvas exposed by the image moving are set by -background.
<?php
$cmd = "$input -background NavajoWhite -shear 15x0";
exec("convert $cmd shear_x.jpg");
?>
Shear the image along the x-axis and/or y-axis. - the colour of the parts of the canvas exposed by the image moving are set by -background.
<?php
$cmd = "$input -sigmoidal-contrast \"3x20%\" ";
exec("convert $cmd sigmoidal_contrast.jpg");
?>
Increase the contrast without saturating highlights or shadows.
<?php
$cmd = "$input -colorspace gray -sketch 0x10+135";
exec("convert $cmd sketch_simple.jpg");
?>
Simulate a pencil sketch.
<?php
$cmd = "$input -sketch 2x1+0.5";
exec("convert $cmd sketch.jpg");
?>
Simulate a pencil sketch.
<?php
$cmd = "$input -solarize \"40%\" ";
exec("convert $cmd solarize_percent.jpg");
?>
Negate all pixels above the threshold level. Effect using percent.
<?php
$cmd = "$input -solarize 16383";
exec("convert $cmd solarize.jpg");
?>
A pixel value is 0 to QuantumRange, (2^Q-1 where Q is the Quality for IM) It is basically the raw interger values used to represent pixels in memory!
For Q16 that is 0 to 65535. 50% is halve that value or a value of 32767
The same thing happens in some -evaluate operations (like 'add'). It is also that way in the -level operator.
In a Solarize operation values greater than the solarize point are negated, values below are left as is.
<?php
$cmd = "-size 100x100 xc: -sparse-color Voronoi ".
" \"30,10 red 10,80 blue 70,60 lime 80,20 yellow\" ".
"-fill white -stroke black ".
"-draw \"circle 30,10 30,12 circle 10,80 10,82\" ".
"-draw \"circle 70,60 70,62 circle 80,20 80,22\" ";
exec("convert $cmd sparse_voronoi.gif");
?>
Color the given image using the specified points of color, and filling the other intervening colors using the given methods.
<?php
$cmd = "$input -background NavajoWhite -splice 20x20+133+100";
exec("convert $cmd splice.jpg");
?>
Splice the current background color into the image.
<?php
$cmd = "$input -background NavajoWhite -gravity south -splice 0x20+0+0 ";
exec("convert $cmd splice1.jpg");
?>
Splice the current background color into the image on one edge - bottom in this case.
<?php
$cmd = "-size 266x200 xc:NavajoWhite -stroke black ".
"-strokewidth 10 -fill none -draw \"circle 133,100 133,10 \" ";
exec("convert $cmd strokewidth.jpg");
?>
Strokewidth sets the line width.
<?php
$cmd = "$input -swirl 80";
exec("convert $cmd swirl.jpg");
?>
Swirl image pixels about the center.
<?php
$cmd = "$input -fill white -pointsize 40 -gravity center -text-font \"Text font\"";
exec("convert $cmd text-font.jpg");
?>
Font for writing fixed-width text. - NOT WORKING NOT A STANDARD INSTALL ITEM ?
<?php
$cmd = "$input -texture texture_plaster.gif";
exec("composite $cmd texture.jpg");
?>
Name of texture to tile onto the image background. - NOT WORKING,
<?php
$cmd = "$input -thumbnail \"50%\" ";
exec("convert $cmd thumbnail.jpg");
?>
Resize and thumbnail have the same effect but thumbnail strips the EXIF data etc. See resize for more options.
<?php
$cmd = "$input -tile-offset +50+50 -tile resize_area.jpg";
exec("convert $cmd tile.jpg");
?>
Set the tile image used for filling a subsequent graphic primitive. NOT WORKING.
<?php
$cmd = "$input -fill Blue -tint 30";
exec("convert $cmd tint.jpg");
?>
Tint the image with the fill color.
<?php
$cmd = "$input -fuzz \"10%\" -transparent \"#7b1216\" ";
exec("convert $cmd transparent.png");
?>
Transparent; saved as a png to retain the transparency. -fuzz can be used to select a range of colours. Image displayed on a grey checkerboard to show the transparent areas.
<?php
$cmd = "$input -transparent-color Black";
exec("convert $cmd transparent_color.jpg");
?>
This does not make a color transparent, it only defines what color the transparent color is in the color palette of the saved image.
<?php
$cmd = "$input -transpose";
exec("convert $cmd transpose.jpg");
?>
Mirror the image along the top-left to bottom-right diagonal.
<?php
$cmd = "$input -transverse";
exec("convert $cmd transverse.jpg");
?>
Mirror the image along the images bottom-left top-right diagonal. Equivalent to the operations -flop -rotate 90.
<?php
$cmd = "strokewidth.jpg -trim ";
exec("convert $cmd trim.png");
?>
Trim an image.
<?php
$cmd = "$input -fill White -pointsize 40 -gravity center".
" -undercolor NavajoWhite -annotate +0+0 \"Undercolor\"";
exec("convert $cmd undercolor.jpg");
?>
set the color of the annotation bounding box.
<?php
$cmd = "$input -unique-colors";
exec("convert $cmd unique_colors.jpg");
?>
Discard all but one of any pixel color. - Output was a very wide thin line; I have shortened it in the imgage tag and it disapers!
<?php
$cmd = "$input -unsharp 1.5";
exec("convert $cmd unsharp_simple.jpg");
?>
Sharpen the image with an unsharp mask operator.
<?php
$cmd = "$input -unsharp 1.5x1+0.7+0.02";
exec("convert $cmd unsharp.jpg");
?>
Sharpen the image with an unsharp mask operator.
DirectClass 16kb
<?php
system("convert $input -verbose -identify ");
?>
Print detailed information about the image when this option preceds the -identify option or info:
Format: JPEG (Joint Photographic
Experts Group JFIF format)
Class: DirectClass
Geometry: 266x200+0+0
Resolution: 72x72
Print size: 3.69444x2.77778
<?php
echo "<pre>";
system("identify -verbose $input ");
echo "</pre>";
?>
A better method; only the first 6 lines displayed.
Q16 OpenMP http://www.imagemagick.org
Copyright: Copyright (C) 1999-2009 ImageMagick
Studio LLC
<?php
echo "<pre>";
system("convert -version");
echo "</pre>";
?>
Print ImageMagick version. As we want the version displayed use system not exec.
<?php
$cmd = "$input -background none -vignette 0x6";
exec("convert $cmd vignette.png");
?>
soften the edges of the image in vignette style. Image displayed on a grey checkerboard to show the transparent areas.
<?php
$cmd = "$input -matte -virtual-pixel NavajoWhite ".
"-distort Perspective \"0,0 0,0 0,200 0,200 266,200 ".
"266,180 266,0 266,20 \" ";
exec("convert $cmd virtual_pixel.jpg");
?>
Specify contents of virtual pixels.
<?php
$cmd = "-watermark \"100%\" -gravity center boots.png $input";
exec("composite $cmd watermark.jpg");
?>
Watermark an image using the given percentages of brightness and saturation.
<?php
$cmd = "$input -background Blue -wave 5";
exec("convert $cmd wave_simple.png");
?>
Shear the columns of an image into a sine wave. - NOT WORKING Image displayed on a grey checkerboard to show the transparent areas.
<?php
$cmd = "$input -background none -wave 50x100";
exec("convert $cmd wave.png");
?>
Shear the columns of an image into a sine wave. Image displayed on a grey checkerboard to show the transparent areas.
<?php
$cmd = "$input -fill black -pointsize 40 -weight Bold".
" -gravity center -annotate +0+0 \"Weight\"".
" -fill white -annotate +2+2 \"Weight\"";
exec("convert $cmd weight.jpg");
?>
Set a font weight for text.
<?php
$cmd = "$input -white-point 15,100";
exec("convert $cmd white-point.jpg");
?>
Chromaticity white point. - NOT WORKING
<?php
$cmd = "$input -white-threshold 8000";
exec("convert $cmd white_threshold.jpg");
?>
Force to white all pixels above the threshold while leaving all pixels at or below the threshold unchanged.