Novice a ~ I just contact with opencv, want to know what call in the opencv library, can make the other images are converted into BMP format output?

CodePudding user response:

Fyi:

 # include & lt; Math. H> 
#include  
#include  
#include  
#include  
# pragma comment (lib, "gdiplus. Lib") 
Using the namespace Gdiplus; 
Would be formats [5] [11]={
L "image/BMP," 
L "image/jpeg", 
L "image/GIF", 
L "image/tiff," 
L "image/PNG," 
}; 
Would be exts [5] [5]={
L ". BMP, "
L "JPG", 
L ". GIF ", 
L ". Tif, "
L "PNG", 
}; 
Int GetEncoderClsid (const WCHAR * format, clsids * pClsid) {
UINT num=0;//number of image encoders 
UINT size=0;//the size of the image encoder array in bytes 
ImageCodecInfo * pImageCodecInfo=NULL; 
GetImageEncodersSize (& amp; Num, & amp; The size); 
If (size==0) return 1;//Failure 
PImageCodecInfo=(ImageCodecInfo *) (malloc (size)); 
If (pImageCodecInfo==NULL) return 1;//Failure 
GetImageEncoders (num, size, pImageCodecInfo); 
For (UINT j=0; J & lt; Num. + + j) {
If (WCSCMP (pImageCodecInfo [j]. Journal of MimeType, format)==0) {
* pClsid=pImageCodecInfo [j]. Journal of clsids; 
Free (pImageCodecInfo); 
Return j;//Success 
} 
} 
Free (pImageCodecInfo); 
return -1;//Failure 
} 
Int wmain (int arg c, would be * argv []) {
Int r=1; 
If (argc<4) {
USAGE: 
Srcimg wprintf (L "% s. {BMP | JPG | | GIF tif | PNG | WMF | emf | ico} desimg. {BMP | JPG | | GIF tif | PNG} Angle \ n", argv [0]). 
Return r; 
} 
int i; 
for (i=0; i<5; I++) {
If (0==_wcsicmp (argv [1] + wcslen (argv [1]) - 4, exts [I])) break; 
} 
If (i>=5) goto the USAGE; 
for (i=0; i<5; I++) {
If (0==_wcsicmp (argv [2] + wcslen (argv [2]) - 4, exts [I])) break; 
} 
If (i>=5) goto the USAGE; 
The GdiplusStartupInput GdiplusStartupInput; 
ULONG_PTR gdiplustoken; 
GdiplusStartup (& amp; Gdiplustoken, & amp; Gdiplusstartupinput, NULL); 
{
The Image of img (argv [1]); 
If (Ok==img. GetLastStatus ()) {
UINT height=img. GetHeight (); 
UINT width=img. GetWidth (); 
The REAL Angle; 
If (1==swscanf_s (argv [3], L "% f", & amp; Angle)) {
REAL size. 
Size=(REAL) SQRT (1.0 * width * height width + 1.0 * * height); 
Matrix mat; 
Mat. Translate (size/2.0 f, size/2.0 f); 
Mat. Rotate (- Angle, MatrixOrderAppend); 
Mat. Translate (size/2.0 f, size/2.0 f, MatrixOrderAppend); 
PointF pfTL (/2.0 f (size - the width), (f) 2.0/size - height); 
PointF pfTR ((f + width 2.0/size - the width), (f) 2.0/size - height); 
PointF pfBL ((size - the width) f/2.0, (the size - height)/2.0 f + height); 
PointF pfBR ((size - the width)/2.0 f + width, (size - height)/2.0 f + height); 
Graphics TGP (& amp; Img); 
Bitmap BMP ((UINT) size, (UINT) size, & amp; The TGP);//Let BMP Resolution equal to img Resolution 
Graphics gp (& amp; BMP); 
Gp. SetTransform (& amp; Mat); 
Gp. DrawImage (& amp; Img, pfTL); 
REAL xmin, ymin, xmax, ymax, x, y, rw, rh; 
Mat. TransformPoints (& amp; PfTL); 
Xmin=xmax=pfTL. X; 
Ymin=ymax=pfTL. Y; 
Mat. TransformPoints (& amp; PfTR); 
If (xmin> Xmin pfTR. X)=pfTR. X; 
If (xmaxIf (ymin> Ymin pfTR. Y)=pfTR. Y; 
If (ymaxMat. TransformPoints (& amp; PfBL); 
If (xmin> Xmin pfBL. X)=pfBL. X; 
If (xmaxIf (ymin> Ymin pfBL. Y)=pfBL. Y; 
If (ymaxMat. TransformPoints (& amp; PfBR); 
If (xmin> Xmin pfBR. X)=pfBR. X; 
If (xmaxIf (ymin> Ymin pfBR. Y)=pfBR. Y; 
If (ymaxX=xmin; 
Y=ymin; 
Rw=xmax - x; 
Rh=ymax - y; 
Bitmap * clone; 
Clone=BMP. Clone (x, y, rw, rh, PixelFormat24bppRGB);//BMP. GetPixelFormat () 
Clsids encoderClsid; 
If (0 & lt;=GetEncoderClsid (formats [I], & amp; EncoderClsid)) {
If (Ok==clone - & gt; Save (argv [2], & amp; EncoderClsid)) {
Wprintf (L "OK" % s % s to % s % s \ n ", argv [0], argv [1], argv [2], argv [3]). 
R=0; 
} else {
Wprintf (L "Error to save % s \ n", argv [2]). 
R=4; 
} 
} else {
Wprintf (L "Error to GetEncoderClsid (% s,... ) \ n ", formats [I]); 
R=3; 
} 
The delete clone; 
} else {
Wprintf (L "Error to get Angle % s \ n", argv [3]). 
R=2; 
} 
} else {
Wprintf (L "Error to the load % s \ n", argv [1]). 
R=5; 
} 
} 
GdiplusShutdown (gdiplustoken); 
Return r; 
} 

CodePudding user response:

Imread - can read a lot of format to the mat
Imwrite - mat can be written in a variety of formats