How to debug OpenCV C++ code in an NDK project - Githubissues

mWater / mWater-Android-App

An Android App that snaps a picture of a petrifilm, counts the bacteria and posts the counts on a server for the mWater project

https://github.com/AndroidImageProcessing

GNU General Public License v3.0

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How to debug OpenCV C++ code in an NDK project #45

Closed cesine closed 12 years ago

cesine commented 12 years ago

one option is to build the C++ in another project

another is to do image print to a path on the sdcard

and the default is to use __android_log_print(

cesine commented 12 years ago

use LOGI or LOGE which grassick defined

define LOGI(...) android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS)
define LOGE(...) android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS)

write the image to the sdcard

imwrite("/sdcard/Todos/afilename.png", mbgra);

can also color the mask of what was found on the screen:

mbgra.setTo(Scalar(0, 0, 255, 255), thresh);//thresh is the mask to draw

and can draw contours individually or all the contours in the vector

drawContours(mbgra, checkboxes, -1, Scalar(0, 255, 0, 255), 2);

cesine commented 12 years ago

I put some more detailed debuging stuff in the sister project:

https://github.com/AndroidImageProcessing/AndroidOpenCVforHackathons/issues?milestone=2&state=closed