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opencv: add mask property to cvlaplace

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Add a "mask" property that sets whether the edges by cvLaplace should be
used as a mask on the original input or not. The same way the original
image is copied to the edges in edgedetect.
This commit is contained in:
Luis de Bethencourt 2016-01-25 22:30:29 +00:00
parent 9301d5874a
commit a152a8342b
2 changed files with 21 additions and 2 deletions
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20
ext/opencv/gstcvlaplace.cpp
View file

@ -87,12 +87,14 @@ enum
PROP_0,
PROP_APERTURE_SIZE,
PROP_SCALE,
PROP_SHIFT
PROP_SHIFT,
PROP_MASK
};
#define DEFAULT_APERTURE_SIZE 3
#define DEFAULT_SCALE_FACTOR 1.0
#define DEFAULT_SHIFT 0.0
#define DEFAULT_MASK TRUE
G_DEFINE_TYPE (GstCvLaplace, gst_cv_laplace, GST_TYPE_OPENCV_VIDEO_FILTER);
@ -157,6 +159,10 @@ gst_cv_laplace_class_init (GstCvLaplaceClass * klass)
g_param_spec_double ("shift", "Shift",
"Value added to the scaled source array elements", 0.0, G_MAXDOUBLE,
DEFAULT_SHIFT, (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 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));
@ -179,6 +185,7 @@ gst_cv_laplace_init (GstCvLaplace * filter)
filter->aperture_size = DEFAULT_APERTURE_SIZE;
filter->scale = DEFAULT_SCALE_FACTOR;
filter->shift = DEFAULT_SHIFT;
filter->mask = DEFAULT_MASK;
gst_opencv_video_filter_set_in_place (GST_OPENCV_VIDEO_FILTER_CAST (filter),
FALSE);
@ -223,6 +230,9 @@ gst_cv_laplace_set_property (GObject * object, guint prop_id,
case PROP_SHIFT:
filter->shift = g_value_get_double (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;
@ -245,6 +255,9 @@ gst_cv_laplace_get_property (GObject * object, guint prop_id,
case PROP_SHIFT:
g_value_set_double (value, filter->shift);
break;
case PROP_MASK:
g_value_set_boolean (value, filter->mask);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -309,8 +322,13 @@ gst_cv_laplace_transform (GstOpencvVideoFilter * base, GstBuffer * buf,
cvLaplace (filter->cvGray, filter->intermediary_img, filter->aperture_size);
cvConvertScale (filter->intermediary_img, filter->Laplace, filter->scale,
filter->shift);
cvZero (filter->CLaplace);
if (filter->mask) {
cvCopy (img, filter->CLaplace, filter->Laplace);
} else {
cvCvtColor (filter->Laplace, filter->CLaplace, CV_GRAY2RGB);
}
gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE);
memcpy (out_info.data, filter->CLaplace->imageData,

1
ext/opencv/gstcvlaplace.h
View file

@ -70,6 +70,7 @@ struct _GstCvLaplace
gint aperture_size;
gdouble scale;
gdouble shift;
gboolean mask;
IplImage *intermediary_img;
IplImage *cvGray;