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facedetect: Add more parameters

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Expose the parameters of cvHaarDetectObjects in facedetect
element.
This commit is contained in:
Thiago Santos 2010-09-08 23:59:38 -03:00
parent 27fedbb352
commit 19ba4c8d19
2 changed files with 112 additions and 2 deletions
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109
ext/opencv/gstfacedetect.c
View file

@ -68,6 +68,11 @@ GST_DEBUG_CATEGORY_STATIC (gst_facedetect_debug);
#define GST_CAT_DEFAULT gst_facedetect_debug
#define DEFAULT_PROFILE "/usr/share/opencv/haarcascades/haarcascade_frontalface_default.xml"
#define DEFAULT_SCALE_FACTOR 1.1
#define DEFAULT_FLAGS 0
#define DEFAULT_MIN_NEIGHBORS 3
#define DEFAULT_MIN_SIZE_WIDTH 0
#define DEFAULT_MIN_SIZE_HEIGHT 0
/* Filter signals and args */
enum
@ -80,9 +85,50 @@ enum
{
PROP_0,
PROP_DISPLAY,
PROP_PROFILE
PROP_PROFILE,
PROP_SCALE_FACTOR,
PROP_MIN_NEIGHBORS,
PROP_FLAGS,
PROP_MIN_SIZE_WIDTH,
PROP_MIN_SIZE_HEIGHT
};
/**
* GstOpencvFaceDetectFlags:
* @GST_CAMERABIN_FLAG_SOURCE_RESIZE: enable video crop and scale
* after capture
*
* Flags parameter to OpenCV's cvHaarDetectObjects function.
*/
typedef enum
{
GST_OPENCV_FACE_DETECT_HAAR_DO_CANNY_PRUNING = (1 << 0)
} GstOpencvFaceDetectFlags;
#define GST_TYPE_OPENCV_FACE_DETECT_FLAGS (gst_opencv_face_detect_flags_get_type())
static void
register_gst_opencv_face_detect_flags (GType * id)
{
static const GFlagsValue values[] = {
{(guint) GST_OPENCV_FACE_DETECT_HAAR_DO_CANNY_PRUNING,
"Do Canny edge detection to discard some regions", "do-canny-pruning"},
{0, NULL, NULL}
};
*id = g_flags_register_static ("GstOpencvFaceDetectFlags", values);
}
static GType
gst_opencv_face_detect_flags_get_type (void)
{
static GType id;
static GOnce once = G_ONCE_INIT;
g_once (&once, (GThreadFunc) register_gst_opencv_face_detect_flags, &id);
return id;
}
/* the capabilities of the inputs and outputs.
*/
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
@ -178,6 +224,28 @@ gst_facedetect_class_init (GstfacedetectClass * klass)
g_param_spec_string ("profile", "Profile",
"Location of Haar cascade file to use for face detection",
DEFAULT_PROFILE, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_FLAGS,
g_param_spec_flags ("flags", "Flags", "Flags to cvHaarDetectObjects",
GST_TYPE_OPENCV_FACE_DETECT_FLAGS, DEFAULT_FLAGS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SCALE_FACTOR,
g_param_spec_double ("scale-factor", "Scale factor",
"Factor by which the windows is scaled after each scan",
1.1, 10.0, DEFAULT_SCALE_FACTOR,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MIN_NEIGHBORS,
g_param_spec_int ("min-neighbors", "Mininum neighbors",
"Minimum number (minus 1) of neighbor rectangles that makes up "
"an object", 0, G_MAXINT, DEFAULT_MIN_NEIGHBORS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MIN_SIZE_WIDTH,
g_param_spec_int ("min-size-width", "Minimum size width",
"Minimum window width size", 0, G_MAXINT, DEFAULT_MIN_SIZE_WIDTH,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MIN_SIZE_HEIGHT,
g_param_spec_int ("min-size-height", "Minimum size height",
"Minimum window height size", 0, G_MAXINT, DEFAULT_MIN_SIZE_HEIGHT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
/* initialize the new element
@ -190,6 +258,11 @@ gst_facedetect_init (Gstfacedetect * filter, GstfacedetectClass * gclass)
{
filter->profile = g_strdup (DEFAULT_PROFILE);
filter->display = TRUE;
filter->scale_factor = DEFAULT_SCALE_FACTOR;
filter->min_neighbors = DEFAULT_MIN_NEIGHBORS;
filter->flags = DEFAULT_FLAGS;
filter->min_size_width = DEFAULT_MIN_SIZE_WIDTH;
filter->min_size_height = DEFAULT_MIN_SIZE_HEIGHT;
gst_facedetect_load_profile (filter);
gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter),
@ -211,6 +284,21 @@ gst_facedetect_set_property (GObject * object, guint prop_id,
case PROP_DISPLAY:
filter->display = g_value_get_boolean (value);
break;
case PROP_SCALE_FACTOR:
filter->scale_factor = g_value_get_double (value);
break;
case PROP_MIN_NEIGHBORS:
filter->min_neighbors = g_value_get_int (value);
break;
case PROP_MIN_SIZE_WIDTH:
filter->min_size_width = g_value_get_int (value);
break;
case PROP_MIN_SIZE_HEIGHT:
filter->min_size_height = g_value_get_int (value);
break;
case PROP_FLAGS:
filter->flags = g_value_get_flags (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -230,6 +318,21 @@ gst_facedetect_get_property (GObject * object, guint prop_id,
case PROP_DISPLAY:
g_value_set_boolean (value, filter->display);
break;
case PROP_SCALE_FACTOR:
g_value_set_double (value, filter->scale_factor);
break;
case PROP_MIN_NEIGHBORS:
g_value_set_int (value, filter->min_neighbors);
break;
case PROP_MIN_SIZE_WIDTH:
g_value_set_int (value, filter->min_size_width);
break;
case PROP_MIN_SIZE_HEIGHT:
g_value_set_int (value, filter->min_size_height);
break;
case PROP_FLAGS:
g_value_set_flags (value, filter->flags);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -306,7 +409,9 @@ gst_facedetect_transform_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
faces =
cvHaarDetectObjects (filter->cvGray, filter->cvCascade,
filter->cvStorage, 1.1, 2, 0, cvSize (30, 30));
filter->cvStorage, filter->scale_factor, filter->min_neighbors,
filter->flags,
cvSize (filter->min_size_width, filter->min_size_height));
if (faces && faces->total > 0) {
msg = gst_facedetect_message_new (filter, buf);

5
ext/opencv/gstfacedetect.h
View file

@ -72,6 +72,11 @@ struct _Gstfacedetect
gboolean display;
gchar *profile;
gdouble scale_factor;
gint min_neighbors;
gint flags;
gint min_size_width;
gint min_size_height;
IplImage *cvGray;
CvHaarClassifierCascade *cvCascade;