Forums - Assertion failed @fcvFilterThresholdu8: src && dst && (signed)threshold >= 0

I am reading a RGB565 Image from Java and passing  as a bytearray to JNI function. then converting to FastCV Img using this function

but when I apply the threshold I get 

Assertion failed @fcvFilterThresholdu8: src && dst && (signed)threshold >= 0

Quote:

void convertToFastCV(JNIEnv *env,jbyteArray source, uint8_t *destination,jint width, jint height){

 

LOGD("Convert to FastCV Obj");

jbyte* jimgData = NULL;

jboolean isCopy = 0;

 

LOGD("Reading");

//RGB 565 Input Image

jimgData = env->GetByteArrayElements(source, &isCopy);

destination  = (uint8_t*)jimgData;

 

// Buffer to place image data if camera callback data is not aligned

uint8_t*  alignedImgBuf;

 

LOGD("Checking aligned");

// Check if camera image data is not aligned.

if( (int)jimgData & 0xF )

{

 

// Allocate buffer for aligned data if necessary.

if(alignedImgBuf == NULL )

{

alignedImgBuf = (uint8_t*)fcvMemAlloc( width*height*3/2, 16 );

}

 

LOGD("Aligning");

memcpy( alignedImgBuf, jimgData, width*height*3/2 );

destination = alignedImgBuf;

 

}

LOGD("Done");

 

 

}

 

 

JNIEXPORT jlong JNICALL Java_premi_anprarm_Test_findplate(JNIEnv *env, jobject obj,jbyteArray source,jbyteArray dest,jint width,jint height) {

 

 

LOGD("Java_premi_anprarm_Test_findplate");

long start_time = currentTimeInMilliseconds();

 

uint8_t* imageData;

convertToFastCV(env,source,imageData,width,height);

 

LOGD("Create processed buffer");

 

//Allocate Processed image

int frameSize = width*height*3/2;

uint8_t *thresholdImg = (uint8_t *)fcvMemAlloc(frameSize, 16);

 

if( thresholdImg == NULL )

{

LOGD("Allocate filteredImgBuf failed");

return 0;

}

else

{

memset(thresholdImg, 128, frameSize);

}

 

LOGD("Apply Threshold");

 

//Apply Threshold

fcvFilterThresholdu8( (uint8_t*)imageData, width, height, thresholdImg, 128 );

 

LOGD("Setting ByteArray Result");

 

env->SetByteArrayRegion(dest,0,width*height*3/2,(jbyte*)thresholdImg);

 

LOGD("Done");

 

long end_time = currentTimeInMilliseconds();

long time = end_time - start_time ;

return (jlong)time;

 

}