I want to use cascade training to recognize barcodes.
As a first step, I thought I would try to build the sample programs, even though they use faces, not barcodes.
The "make" command seemed to complete successfully, and put executables in the /bin directory.
Then I got the following errors:
../../bin/opencv_test_objdetect
OpenCV version: 2.4.8
OpenCV VCS version: unknown
Build type: release
CPU features: sse sse2 sse3
[==========] Running 3 tests from 3 test cases.
[----------] Global test environment set-up.
[----------] 1 test from Objdetect_HOGDetectorReadWrite
[ RUN ] Objdetect_HOGDetectorReadWrite.regression
/home/user/Desktop/computerVision/opencv-2.4.8/modules/objdetect/test/test_cascadeandhog.cpp:525: Failure
Value of: img.empty()
Actual: true
Expected: false
[ FAILED ] Objdetect_HOGDetectorReadWrite.regression (0 ms)
[----------] 1 test from Objdetect_HOGDetectorReadWrite (0 ms total)
[----------] 1 test from Objdetect_CascadeDetector
[ RUN ] Objdetect_CascadeDetector.regression
/home/user/Desktop/computerVision/opencv-2.4.8/modules/ts/src/ts.cpp:519: Failure
Failed
failure reason: Invalid test data
test case #-1
seed: ffffffffffffffff
-----------------------------------
LOG: validation file is not determined or not correct
-----------------------------------
[ FAILED ] Objdetect_CascadeDetector.regression (0 ms)
[----------] 1 test from Objdetect_CascadeDetector (0 ms total)
[----------] 1 test from Objdetect_HOGDetector
[ RUN ] Objdetect_HOGDetector.regression
/home/user/Desktop/computerVision/opencv-2.4.8/modules/ts/src/ts.cpp:519: Failure
Failed
failure reason: Invalid test data
test case #-1
seed: ffffffffffffffff
-----------------------------------
LOG: validation file is not determined or not correct
-----------------------------------
[ FAILED ] Objdetect_HOGDetector.regression (1 ms)
[----------] 1 test from Objdetect_HOGDetector (1 ms total)
[----------] Global test environment tear-down
[==========] 3 tests from 3 test cases ran. (1 ms total)
[ PASSED ] 0 tests.
[ FAILED ] 3 tests, listed below:
[ FAILED ] Objdetect_HOGDetectorReadWrite.regression
[ FAILED ] Objdetect_CascadeDetector.regression
[ FAILED ] Objdetect_HOGDetector.regression
3 FAILED TESTS
YOU HAVE 2 DISABLED TESTS
This was very interesting because nothing in the tutorial code seems to supply such error-checking.
The tutorial is at:
http://docs.opencv.org/doc/tutorials/objdetect/cascade_classifier/cascade_classifier.html?highlight=objdetect
I ran the executable in the directory
opencv-2.4.8/data/haarcascades
because that contains two files that are mentioned in the code:
"haarcascade_frontalface_alt.xml"
"haarcascade_eye_tree_eyeglasses.xml"
Apparently this code requires input from a webcam as well as XML files, but it doesn't turn on the webcam automatically.
In fact, I want to run this without getting input from a webcam, but for the moment, I don't mind doing whatever is necessary to get it to run properly.
Thanks.
