我想使用ImageMagick的C API来实现这个Emboss效果。脚本来自this页。我已经实现了方法1选项的浮雕,但我正在寻找转换为方法2。请查看bash脚本中的选项。
当我为方法2调试上面的脚本时,我得到了这个。
convert -quiet binaryimage.gif +repage ./emboss_1_18210.mpc
convert '(' ./emboss_1_18210.mpc -colorspace gray ')' '(' -clone 0 -negate ')' '(' -clone 0 -distort SRT '0,0 1 0 -2.12132,-2.12132' ')' '(' -clone 1 -distort SRT '0,0 1 0 2.12132,2.12132' ')' -delete 0,1 -define compose:args=50 -compose blend -composite -level 100% ./emboss_2_18210.mpc
convert ./emboss_2_18210.mpc binaryimageCm2.gif
下面是我的C程序,它还没有完成。
#include <stdio.h>
#include <MagickWand/MagickWand.h>
#include <math.h>
#define PI 3.14159265
double *arguments(double r[],int i){
double azimuth = 135;
int depth = 6;
r[0] = 0;
r[1] = 0;
r[2] = 1;
r[3] = 0;
if(i==1){
r[4] = cos(0.78539816339) * depth/2;
r[5] = sin(0.78539816339) * depth/2;
}else{
r[4] = -cos(0.78539816339) * depth/2;
r[5] = -sin(0.78539816339) * depth/2;
}
return(r);
}
int emboss(){
double r[6];
MagickWand *wand = NULL;
wand = NewMagickWand();
MagickReadImage(wand,"binaryimage.gif");
int test = MagickSetImageColorspace(wand, 3);
printf("%d\n", test);
MagickDistortImage(wand, ScaleRotateTranslateDistortion ,6, arguments(r,0) ,1);
MagickDistortImage(wand, ScaleRotateTranslateDistortion ,6, arguments(r,1) ,1);
MagickNegateImage(wand,1);
MagickCompositeImage(wand, wand, BlendCompositeOp, 1, 0, 0);
MagickWriteImages(wand,"binaryimage_c_emboss.gif",MagickTrue);
wand=DestroyMagickWand(wand);
MagickWandTerminus();
return 1;
}
int main(int argc, char **argv) {
emboss();
}
最佳答案
这有点棘手,因为您需要转换colorspace并定义compose参数属性。
还要注意,对于所有扭曲,应将bestfit
设置为false。
这是CLI&C的等价物。
命令行
convert \( wizard: -colorspace gray \) \
\( -clone 0 -negate \) \
\( -clone 0 -distort SRT '0,0 1 0 -2.12132,-2.12132' \) \
\( -clone 1 -distort SRT '0,0 1 0 2.12132, 2.12132' \) \
-delete 0,1 \
-define compose:args=50 \
-compose blend -composite \
-level 100% output.png
C类
#include <wand/MagickWand.h> // or <MagickWand/MagickWand.h> if using IM 7
#define DISTORT_ARG_COUNT 6
double distort_ags[DISTORT_ARG_COUNT] = {
0.0f,
0.0f,
1.0f,
0.0f,
-2.12132,
-2.12132,
};
int main(int argc, const char * argv[]) {
MagickWandGenesis();
MagickWand
* wand0,
* wand1,
* wand2,
* wand3;
wand0 = NewMagickWand();
// '(' wizard: -colorspace gray ')'
MagickReadImage(wand0, "wizard:");
MagickTransformImageColorspace(wand0, GRAYColorspace);
// '(' -clone 0 -negate ')'
wand1 = CloneMagickWand(wand0);
MagickNegateImage(wand1, MagickFalse);
// '(' -clone 0 -distort SRT '0,0 1 0 -2.12132,-2.12132' ')'
wand2 = CloneMagickWand(wand0);
MagickDistortImage(wand2,
ScaleRotateTranslateDistortion,
DISTORT_ARG_COUNT,
distort_ags,
MagickFalse);
// '(' -clone 1 -distort SRT '0,0 1 0 2.12132,2.12132' ')'
wand3 = CloneMagickWand(wand1);
distort_ags[4] *= -1;
distort_ags[5] *= -1;
MagickDistortImage(wand3,
ScaleRotateTranslateDistortion,
DISTORT_ARG_COUNT,
distort_ags,
MagickFalse);
// -delete 0,1
wand0 = DestroyMagickWand(wand0);
wand1 = DestroyMagickWand(wand1);
// -define compose:args=50
MagickSetImageArtifact(wand3, "compose:args", "50"); // Might also be set on wand2
// -compose blend -composite
// If using ImageMagick 7, define `clip_to_self'.
// MagickCompositeImage(wand2, wand3, BlendCompositeOp, MagickTrue, 0, 0);
MagickCompositeImage(wand2, wand3, BlendCompositeOp, 0, 0);
// -level 100%
MagickLevelImage(wand2, QuantumRange, 1.0, 0);
// output.png
MagickWriteImage(wand2, "output.png");
wand2 = DestroyMagickWand(wand2);
wand3 = DestroyMagickWand(wand3);
MagickWandTerminus();
return 0;
}