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opencv: add mask property to cvsobel

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Add a "mask" property that sets whether the detected derivative edges
should be used as a mask on the original input or not. The same way
the original image is added to the edges in edgedetect.
This commit is contained in:
Luis de Bethencourt 2016-01-25 21:42:52 +00:00
parent e90b383060
commit 9301d5874a
2 changed files with 20 additions and 2 deletions
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21
ext/opencv/gstcvsobel.cpp
View file

@ -87,12 +87,14 @@ enum
PROP_0,
PROP_X_ORDER,
PROP_Y_ORDER,
PROP_APERTURE_SIZE
PROP_APERTURE_SIZE,
PROP_MASK
};
#define DEFAULT_X_ORDER 1
#define DEFAULT_Y_ORDER 0
#define DEFAULT_APERTURE_SIZE 3
#define DEFAULT_MASK TRUE
G_DEFINE_TYPE (GstCvSobel, gst_cv_sobel, GST_TYPE_OPENCV_VIDEO_FILTER);
@ -156,6 +158,10 @@ gst_cv_sobel_class_init (GstCvSobelClass * klass)
"Size of the extended Sobel Kernel (1, 3, 5 or 7)", 1, 7,
DEFAULT_APERTURE_SIZE,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_MASK,
g_param_spec_boolean ("mask", "Mask",
"Sets whether the detected derivative edges should be used as a mask on the original input or not",
DEFAULT_MASK, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
@ -178,6 +184,7 @@ gst_cv_sobel_init (GstCvSobel * filter)
filter->x_order = DEFAULT_X_ORDER;
filter->y_order = DEFAULT_Y_ORDER;
filter->aperture_size = DEFAULT_APERTURE_SIZE;
filter->mask = DEFAULT_MASK;
gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter),
FALSE);
@ -263,6 +270,9 @@ gst_cv_sobel_set_property (GObject * object, guint prop_id,
filter->aperture_size = g_value_get_int (value);
}
break;
case PROP_MASK:
filter->mask = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -285,6 +295,9 @@ gst_cv_sobel_get_property (GObject * object, guint prop_id,
case PROP_APERTURE_SIZE:
g_value_set_int (value, filter->aperture_size);
break;
case PROP_MASK:
g_value_set_boolean (value, filter->mask);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -303,7 +316,11 @@ gst_cv_sobel_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
filter->aperture_size);
cvZero (filter->cvCSobel);
cvCvtColor (filter->cvSobel, filter->cvCSobel, CV_GRAY2RGB);
if (filter->mask) {
cvCopy (img, filter->cvCSobel, filter->cvSobel);
} else {
cvCvtColor (filter->cvSobel, filter->cvCSobel, CV_GRAY2RGB);
}
gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE);
memcpy (out_info.data, filter->cvCSobel->imageData,

1
ext/opencv/gstcvsobel.h
View file

@ -70,6 +70,7 @@ struct _GstCvSobel
gint x_order;
gint y_order;
gint aperture_size;
gboolean mask;
IplImage *cvCSobel;
IplImage *cvGray;