Mat of Byte to Array falling

[shira Jacobs]

//Encoding the image
Loader.load(opencv_java.class) ;
MatOfByte matOfByte = new MatOfByte();
byte[] byteArray = matOfByte.toArray();

running the above code getting this error: 

Native Mat has unexpected type or size: Mat [ -1*-1*CV_8UC1, isCont=false, isSubmat=false, nativeObj=0x20e66d30130, dataAddr=0x0 ]

[shira Jacobs]

It's very important for me 

did not find any answer on goggle, 

can any one assist me, please?? 

ב-יום רביעי, 8 בפברואר 2023 בשעה 11:28:25 UTC+2, ‪shira Jacobs‬‏ כתב/ה:

[Keith Hall]

I'm not at my PC to check but it looks like you're basically trying to create a byte array from an empty MatOfByte. Try pushing some bytes into the  MatOfByte

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[Keith Hall]

So this might be one way of doing it

Loader.load(opencv_java.class);
String imageName = "dog.jpg";
Mat image = imread("images/" + imageName);
MatOfByte buffer = new MatOfByte();
// encode the image in the buffer, according to the PNG format
Imgcodecs.imencode(".png", image,  buffer);

[shira Jacobs]

Hey @Keith Hall 

Thank you!! very much appreciated!!

‫בתאריך יום ד׳, 8 בפבר׳ 2023 ב-20:30 מאת ‪Keith Hall‬‏ <‪the.kei...@gmail.com‬‏>:‬

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