Closed GoogleCodeExporter closed 8 years ago
Looks like there is a change that is caused by this bug:
http://code.opencv.org/issues/2219
Please let me know if this is related. You could try an older version of OpenCV
to verify that for example.
Original comment by samuel.a...@gmail.com
on 4 Mar 2013 at 10:07
Additional information of previous program :
OpenCV 2.4.0
JavaCV 0.3
I have tried OpenCV 2.4.0 and JavaCV 0.2
also OpenCV 2.4.4 and JavaCV 0.4
unfortunately the problem is still here.
There is the main part of my testing program which I made a little change from
ObjectFinder.
public static RecognitionResult Detection(){
...
javaCV.Settings settings_text = new javaCV.Settings();
settings_text.objectImage = object_text;
settings_text.useFLANN = true;
settings_text.ransacReprojThreshold = 5;
javaCV finder_text = new javaCV(settings_text);
...
double[] dst_corners_text = finder_text.find(image);
if (dst_corners_text != null) {
for (int i = 0; i < 4; i++) {
int j = (i + 1) % 4;
int x1 = (int) Math.round(dst_corners_text[2 * i]);
int y1 = (int) Math.round(dst_corners_text[2 * i + 1]);
int x2 = (int) Math.round(dst_corners_text[2 * j]);
int y2 = (int) Math.round(dst_corners_text[2 * j + 1]);
System.out.println("x1:"+x1+" y1:"+y1);
...
}
...
}
public static void main(String[] args) throws Exception {
for (int a = 0 ; a < 2 ; a++){
Detection();
}
}
When a == 0 , output =
x1:720 y1:86
x1:726 y1:922
x1:137 y1:924
x1:163 y1:56
When a ==1 , output
x1:720 y1:86
x1:726 y1:919
x1:136 y1:925
x1:162 y1:55
The results are different.
Sorry that I tried to use (OpenCV 2.3.1 and JavaCV 0.1) and (OpenCV 2.3.1 and
JavaCV 0.2) as your suggestion but some errors are occurred in both cases.
Exception in thread "main" java.lang.UnsatisfiedLinkError:
C:\DOCUME~1\JACKY_~1\LOCALS~1\Temp\javacpp6981140360017\jniopencv_core.dll
(JVMPORT015E 无法解析共享库引用 - 可能缺少必备共享库)
at java.lang.ClassLoader.loadLibraryWithPath(ClassLoader.java:1011)
at java.lang.System.load(System.java:457)
at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:418)
at com.googlecode.javacpp.Loader.load(Loader.java:368)
at com.googlecode.javacpp.Loader.load(Loader.java:315)
at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:131)
at java.lang.J9VMInternals.initializeImpl(Native Method)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
at java.lang.Class.forNameImpl(Native Method)
at java.lang.Class.forName(Class.java:172)
at com.googlecode.javacpp.Loader.load(Loader.java:334)
at com.googlecode.javacv.cpp.opencv_imgproc.<clinit>(opencv_imgproc.java:96)
at java.lang.J9VMInternals.initializeImpl(Native Method)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
at java.lang.Class.forNameImpl(Native Method)
at java.lang.Class.forName(Class.java:172)
at com.googlecode.javacpp.Loader.load(Loader.java:334)
at com.googlecode.javacv.cpp.opencv_highgui.<clinit>(opencv_highgui.java:91)
at java.lang.J9VMInternals.initializeImpl(Native Method)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
at javaCV.Detection(javaCV.java:459)
at javaCV.Detection(javaCV.java:417)
at javaCV.main(javaCV.java:999)
where javaCV.java:459 refer to
IplImage object_text = cvLoadImage(objectFilename_text,CV_LOAD_IMAGE_GRAYSCALE);
I guess it is due to some mistakes in environment variable setting.
I use the following as User variable setting.
CLASSPATH
C:\opencv\build\x86\vc10\lib;C:\opencv\build\x86\vc10\staticlib;
PATH
C:\opencv\build\common\tbb\ia32\vc10;C:\opencv\build\common\tbb\ia32\vc10\irml_c
;
C:\opencv\build\common\tbb\ia32\vc10\irml;C:\opencv\build\x86\vc10\bin;
Please let me know if there is any obvious mistakes.
Thank you.
Original comment by rjisgr...@msn.com
on 5 Mar 2013 at 10:54
Does the problem occur with the /original/ ObjectFinder.java as well? Or only
with your /modified/ version?
Original comment by samuel.a...@gmail.com
on 5 Mar 2013 at 10:59
If I simply add a for loop in the main() of the /original/ ObjectFinder.java
and use my own object and scene image, the problem is occurred.
If box.png and box_in_scene.png are used instead, the problem is still here.
Original comment by rjisgr...@msn.com
on 6 Mar 2013 at 2:11
Here is the main() of my testing program.
1.For loop is added.
2.String objectFilename and sceneFilename are hard-coded instead of args[]
parameter.
3.System.out.println("x1 :" + x1 + " y1 :" + y1) is added to show the
coordinate of 4 corners of generated frame.
public static void main(String[] args) throws Exception {
// Logger.getLogger("com.googlecode.javacv").setLevel(Level.OFF);
for (int a = 0; a < 3; a++) {
String objectFilename = "image/box.png";
String sceneFilename = "image/box_in_scene.png";
IplImage object = cvLoadImage(objectFilename,
CV_LOAD_IMAGE_GRAYSCALE);
IplImage image = cvLoadImage(sceneFilename, CV_LOAD_IMAGE_GRAYSCALE);
if (object == null || image == null) {
System.err.println("Can not load " + objectFilename
+ " and/or " + sceneFilename);
System.exit(-1);
}
IplImage objectColor = IplImage.create(object.width(),object.height(), 8, 3);
cvCvtColor(object, objectColor, CV_GRAY2BGR);
IplImage correspond = IplImage.create(image.width(),object.height() + image.height(), 8, 1);
cvSetImageROI(correspond,cvRect(0, 0, object.width(), object.height()));
cvCopy(object, correspond);
cvSetImageROI(correspond,cvRect(0, object.height(), correspond.width(), correspond.height()));
cvCopy(image, correspond);
cvResetImageROI(correspond);
ObjectFinder.Settings settings = new ObjectFinder.Settings();
settings.objectImage = object;
settings.useFLANN = true;
settings.ransacReprojThreshold = 5;
ObjectFinder finder = new ObjectFinder(settings);
long start = System.currentTimeMillis();
double[] dst_corners = finder.find(image);
System.out.println("Finding time = "
+ (System.currentTimeMillis() - start) + " ms");
if (dst_corners != null) {
for (int i = 0; i < 4; i++) {
int j = (i + 1) % 4;
int x1 = (int) Math.round(dst_corners[2 * i]);
int y1 = (int) Math.round(dst_corners[2 * i + 1]);
int x2 = (int) Math.round(dst_corners[2 * j]);
int y2 = (int) Math.round(dst_corners[2 * j + 1]);
cvLine(correspond, cvPoint(x1, y1 + object.height()),
cvPoint(x2, y2 + object.height()), CvScalar.WHITE,
1, 8, 0);
System.out.println("x1 :" + x1 + " y1 :" + y1);
}
}
for (int i = 0; i < finder.ptpairs.size(); i += 2) {
CvPoint2D32f pt1 = finder.objectKeypoints[finder.ptpairs.get(i)]
.pt();
CvPoint2D32f pt2 = finder.imageKeypoints[finder.ptpairs
.get(i + 1)].pt();
cvLine(correspond,
cvPointFrom32f(pt1),
cvPoint(Math.round(pt2.x()),
Math.round(pt2.y() + object.height())),
CvScalar.WHITE, 1, 8, 0);
}
CanvasFrame objectFrame = new CanvasFrame("Object");
CanvasFrame correspondFrame = new CanvasFrame("Object Correspond");
correspondFrame.showImage(correspond);
for (int i = 0; i < finder.objectKeypoints.length; i++) {
CvSURFPoint r = finder.objectKeypoints[i];
CvPoint center = cvPointFrom32f(r.pt());
int radius = Math.round(r.size() * 1.2f / 9 * 2);
cvCircle(objectColor, center, radius, CvScalar.RED, 1, 8, 0);
}
objectFrame.showImage(objectColor);
objectFrame.waitKey();
objectFrame.dispose();
correspondFrame.dispose();
}
}
Following is the output :
2013年3月6日 上午11:23:39 ObjectFinder setSettings
INFO: 593 object descriptors
2013年3月6日 上午11:23:39 ObjectFinder find
INFO: 782 image descriptors
2013年3月6日 上午11:23:39 ObjectFinder locatePlanarObject
INFO: 37 matching pairs found
Finding time = 172 ms
x1 :118 y1 :161
x1 :283 y1 :175
x1 :269 y1 :299
x1 :89 y1 :273
2013年3月6日 上午11:23:40 ObjectFinder setSettings
INFO: 593 object descriptors
2013年3月6日 上午11:23:40 ObjectFinder find
INFO: 782 image descriptors
2013年3月6日 上午11:23:40 ObjectFinder locatePlanarObject
INFO: 40 matching pairs found
Finding time = 156 ms
x1 :118 y1 :161
x1 :283 y1 :175
x1 :269 y1 :298
x1 :89 y1 :273
2013年3月6日 上午11:23:41 ObjectFinder setSettings
INFO: 593 object descriptors
2013年3月6日 上午11:23:41 ObjectFinder find
INFO: 782 image descriptors
2013年3月6日 上午11:23:41 ObjectFinder locatePlanarObject
INFO: 42 matching pairs found
Finding time = 156 ms
x1 :118 y1 :161
x1 :284 y1 :175
x1 :269 y1 :299
x1 :90 y1 :273
These 3 sets of result are different.
However, I found that every time I run this program, the output is the same,
which means the 3 sets of result are same as previous 3 sets.
Original comment by rjisgr...@msn.com
on 6 Mar 2013 at 3:35
If you want /exactly/ the same results down to the nearest pixel, then you
shouldn't use FLANN. Do not set the `useFLANN` setting to `true`: Leave to
`false`.
And please ask your questions on the mailing list next time if possible, thank
you.
Original comment by samuel.a...@gmail.com
on 9 Mar 2013 at 3:42
Original issue reported on code.google.com by
rjisgr...@msn.com
on 4 Mar 2013 at 9:55Attachments: