/*
* call-seq:
* IplImage::load(<i>filename[,iscolor = nil]</i>)
*
* Load an image from file.
* iscolor = true, the loaded image is forced to be color 3-channel image.
* iscolor = false, the loaded image is forced to be grayscale.
* iscolor = nil, the loaded image will be loaded as is (depend on the file).
* Currently the following file format are supported.
* * Windows bitmaps - BMP,DIB
* * JPEG files - JPEG,JPG,JPE
* * Portable Network Graphics - PNG
* * Portable image format - PBM,PGM,PPM
* * Sun rasters - SR,RAS
* * TIFF files - TIFF,TIF
*/
VALUE
rb_load_image(int argc, VALUE *argv, VALUE self)
{
VALUE filename, iscolor;
rb_scan_args(argc, argv, "11", &filename, &iscolor);
Check_Type(filename, T_STRING);
int _iscolor;
switch (TYPE(iscolor)) {
case T_FALSE:
_iscolor = 0;
break;
case T_TRUE:
_iscolor = 1;
break;
case T_NIL:
_iscolor = -1;
break;
default:
rb_warn("argument 2 should be true(color)/false(non-color) or nil(auto).");
_iscolor = -1;
}
IplImage *image;
if ((image = cvLoadImage(StringValueCStr(filename), _iscolor)) == NULL) {
rb_raise(rb_eStandardError, "file does not exist or invalid format image.");
}
return OPENCV_OBJECT(rb_klass, image);
}
/*
* call-seq:
* CvHaarClassiferCascade.load(<i>path</i>) -> object-detector
*
* Load trained cascade of haar classifers from file.
* Object detection classifiers are stored in XML or YAML files.
* sample of object detection classifier files is included by OpenCV.
*
* You can found these at
* C:\Program Files\OpenCV\data\haarcascades\*.xml (Windows, default install path)
*
* e.g. you want to try to detect human's face.
* detector = CvHaarClassiferCascade.load("haarcascade_frontalface_alt.xml")
*/
VALUE
rb_load(VALUE klass, VALUE path)
{
CvHaarClassifierCascade *cascade = (CvHaarClassifierCascade*)cvLoad(StringValueCStr(path), 0, 0, 0);
if(!CV_IS_HAAR_CLASSIFIER(cascade))
rb_raise(rb_eTypeError, "invalid format haar classifier cascade file.");
return OPENCV_OBJECT(rb_klass, cascade);
}
/*
* call-seq:
* IplImage::load(<i>filename[,iscolor = CV_LOAD_IMAGE_COLOR]</i>)
*
* Load an image from file.
* iscolor = CV_LOAD_IMAGE_COLOR, the loaded image is forced to be a 3-channel color image
* iscolor = CV_LOAD_IMAGE_GRAYSCALE, the loaded image is forced to be grayscale
* iscolor = CV_LOAD_IMAGE_UNCHANGED, the loaded image will be loaded as is.
* Currently the following file format are supported.
* * Windows bitmaps - BMP,DIB
* * JPEG files - JPEG,JPG,JPE
* * Portable Network Graphics - PNG
* * Portable image format - PBM,PGM,PPM
* * Sun rasters - SR,RAS
* * TIFF files - TIFF,TIF
*/
VALUE
rb_load_image(int argc, VALUE *argv, VALUE self)
{
VALUE filename, iscolor;
rb_scan_args(argc, argv, "11", &filename, &iscolor);
Check_Type(filename, T_STRING);
int _iscolor;
if (TYPE(iscolor) == T_NIL) {
_iscolor = CV_LOAD_IMAGE_COLOR;
}
else {
Check_Type(iscolor, T_FIXNUM);
_iscolor = FIX2INT(iscolor);
}
IplImage *image;
if ((image = cvLoadImage(StringValueCStr(filename), _iscolor)) == NULL) {
rb_raise(rb_eStandardError, "file does not exist or invalid format image.");
}
return OPENCV_OBJECT(rb_klass, image);
}
VALUE
rb_allocate(VALUE klass)
{
return OPENCV_OBJECT(rb_klass, 0);
}
VALUE
new_object(CvSize size, int type)
{
return OPENCV_OBJECT(rb_klass, rb_cvCreateImage(size, cvIplDepth(type), CV_MAT_CN(type)));
}
VALUE
new_object(int width, int height, int type)
{
return OPENCV_OBJECT(rb_klass, rb_cvCreateImage(cvSize(width, height), cvIplDepth(type), CV_MAT_CN(type)));
}
