In the python file OpenCV isnot able to read the image, though the location is correct

[sayantan99]

com.chaquo.python.PyException: error: OpenCV(4.1.2) /home/smith/git/chaquo/python/server/pypi/packages/opencv-python/build/4.1.2.30/cp38-cp38-android_21_arm64_v8a/src/opencv/modules/imgproc/src/color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'

[mhsmith]

Please post the full stack trace and the relevant section of your code.

[sayantan99]

The image is in the python folder of the app, along with the python file.
Code:(Python)
import cv2
from os.path import dirname, join
from android.os import Environment
def test():
src = cv2.imread("sam.jpg", 1 )
grayScale = cv2.cvtColor( src, cv2.COLOR_RGB2GRAY )
kernel = cv2.getStructuringElement(1,(17,17))

StackTrace:
E/cv::error(): OpenCV(4.1.2) Error: Assertion failed (!_src.empty()) in cvtColor, file /home/smith/git/chaquo/python/server/pypi/packages/opencv-python/build/4.1.2.30/cp38-cp38-android_21_arm64_v8a/src/opencv/modules/imgproc/src/color.cpp, line 182
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.chao, PID: 26627
com.chaquo.python.PyException: error: OpenCV(4.1.2) /home/smith/git/chaquo/python/server/pypi/packages/opencv-python/build/4.1.2.30/cp38-cp38-android_21_arm64_v8a/src/opencv/modules/imgproc/src/color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'

    at <python>.ops.test(ops.py:12)
    at <python>.chaquopy_java.call(chaquopy_java.pyx:281)
    at <python>.chaquopy_java.Java_com_chaquo_python_PyObject_callAttrThrows(chaquopy_java.pyx:253)
    at com.chaquo.python.PyObject.callAttrThrows(Native Method)
    at com.chaquo.python.PyObject.callAttr(PyObject.java:209)
    at com.example.open.MainActivity$1.onClick(MainActivity.java:40)
    at android.view.View.performClick(View.java:7870)
    at android.widget.TextView.performClick(TextView.java:14970)
    at android.view.View.performClickInternal(View.java:7839)
    at android.view.View.access$3600(View.java:886)
    at android.view.View$PerformClick.run(View.java:29363)
    at android.os.Handler.handleCallback(Handler.java:883)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loop(Looper.java:237)
    at android.app.ActivityThread.main(ActivityThread.java:7814)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1075)

[mhsmith]

As I already told you in #301, to open files in the same directory as the Python file you need to use the technique from #144.