如何加载图像到Android和调整 [英] How to load image to android and resize

问题描述

我试图加载图像的垫子，并与下面code调整其大小

I am trying to load an image in a mat and resize it with the below code

        Mat temp1= new Mat();
        int[] train_responses = null;
        Mat temp2 = new Mat();
        Mat temp3 = new Mat();
        Mat train_samples = new Mat();
        for (int ii = 0; ii < 10; ii++){            
            temp1 = Highgui.imread("/mnt/sdcard/images/train/" + ii + ".png");
            Imgproc.resize(temp1, temp2, new Size(30,20));  
        }

但具有下列日志code崩溃

but the code crashes with the following log

opencv error assertion failed (ssize.area() > 0) in void cv::resize....

我在哪里错了？

Where am I wrong?

推荐答案

请检查你所有的PNG图像0.png，1.png，... 9.png都存在，是在正确的位置，并具有非零当您通过imread加载它们的尺寸。这没有什么错，否则用code - 它为我使用code，当我打开我自己的PNG图像

Check that all your png images 0.png, 1.png, ... 9.png all exist, are in the correct location and have non-zero dimensions when you load them via imread. There's nothing otherwise wrong with the code - it works for me when I load my own png image using your code.

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