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package com.yeyupiaoling.teststadiometry;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.view.TextureView;
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public class AutoFitTextureView extends TextureView {
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private int mRatioWidth = 0;
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private int mRatioHeight = 0;
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public AutoFitTextureView(Context context) {
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this(context, null);
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}
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public AutoFitTextureView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public AutoFitTextureView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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/**
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* Sets the aspect ratio for this view. The size of the view will be measured based on the ratio
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* calculated from the parameters. Note that the actual sizes of parameters don't matter, that
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* is, calling setAspectRatio(2, 3) and setAspectRatio(4, 6) make the same result.
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*
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* @param width Relative horizontal size
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* @param height Relative vertical size
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*/
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public void setAspectRatio(int width, int height) {
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if (width < 0 || height < 0) {
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throw new IllegalArgumentException("Size cannot be negative.");
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}
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mRatioWidth = width;
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mRatioHeight = height;
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requestLayout();
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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setMeasuredDimension(mRatioWidth, mRatioHeight);
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}
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}
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package com.yeyupiaoling.teststadiometry;
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import android.annotation.SuppressLint;
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import android.content.Intent;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.Matrix;
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import android.os.Bundle;
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import android.util.Log;
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import android.widget.Button;
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import android.widget.ImageView;
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import android.widget.TextView;
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import androidx.appcompat.app.AppCompatActivity;
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import org.opencv.android.OpenCVLoader;
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import java.io.IOException;
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public class MainActivity extends AppCompatActivity {
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private static final String TAG = MainActivity.class.getName();
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private ImageView imageViewResult;
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private StereoBMUtil stereoBMUtil;
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private TextView textView;
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private Bitmap leftBitmap;
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private Bitmap rightBitmap;
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@SuppressLint("ClickableViewAccessibility")
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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//初始化
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if (OpenCVLoader.initDebug()) {
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Log.d(TAG, "OpenCVLoader初始化成功");
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}
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stereoBMUtil = new StereoBMUtil();
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ImageView imageViewLeft = findViewById(R.id.imageViewLeft);
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ImageView imageViewRight = findViewById(R.id.imageViewRight);
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imageViewResult = findViewById(R.id.imageViewResult);
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textView = findViewById(R.id.result_tv);
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Button button = findViewById(R.id.button);
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Button button1 = findViewById(R.id.button1);
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// 加载图片
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try {
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leftBitmap = BitmapFactory.decodeStream(getAssets().open("Left3.bmp"));
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rightBitmap = BitmapFactory.decodeStream(getAssets().open("Right3.bmp"));
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imageViewLeft.setImageBitmap(leftBitmap);
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imageViewRight.setImageBitmap(rightBitmap);
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} catch (IOException e) {
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e.printStackTrace();
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}
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// 执行StereoBM算法
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button.setOnClickListener(v -> {
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try {
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Bitmap result = stereoBMUtil.compute(leftBitmap, rightBitmap);
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imageViewResult.setImageBitmap(result);
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} catch (Exception e) {
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e.printStackTrace();
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}
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});
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// 打开相机activity
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button1.setOnClickListener(v -> {
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Intent intent = new Intent(MainActivity.this, CameraActivity.class);
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startActivity(intent);
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});
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// 点击计算后的图片，获取三维坐标数据
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imageViewResult.setOnTouchListener((v, event) -> {
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// 获取触摸点的坐标 x, y
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float x = event.getX();
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float y = event.getY();
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// 目标点的坐标
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float[] dst = new float[2];
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Matrix imageMatrix = imageViewResult.getImageMatrix();
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Matrix inverseMatrix = new Matrix();
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imageMatrix.invert(inverseMatrix);
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inverseMatrix.mapPoints(dst, new float[]{x, y});
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int dstX = (int) dst[0];
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int dstY = (int) dst[1];
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// 获取该点的三维坐标
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double[] c = stereoBMUtil.getCoordinate(dstX, dstY);
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String s = String.format("点(%d, %d) 三维坐标：[%.2f, %.2f, %.2f]", dstX, dstY, c[0], c[1], c[2]);
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Log.d(TAG, s);
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textView.setText(s);
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return true;
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});
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}
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}
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package com.yeyupiaoling.teststadiometry;
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import android.graphics.Bitmap;
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import android.graphics.Matrix;
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import android.util.Size;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.List;
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public class Utils {
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private static final String TAG = Utils.class.getName();
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// 获取最优的预览图片大小
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public static Size chooseOptimalSize(final Size[] choices, final int width, final int height) {
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final Size desiredSize = new Size(width, height);
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// Collect the supported resolutions that are at least as big as the preview Surface
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boolean exactSizeFound = false;
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float desiredAspectRatio = width * 1.0f / height; //in landscape perspective
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float bestAspectRatio = 0;
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final List<Size> bigEnough = new ArrayList<Size>();
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for (final Size option : choices) {
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if (option.equals(desiredSize)) {
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// Set the size but don't return yet so that remaining sizes will still be logged.
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exactSizeFound = true;
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break;
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}
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float aspectRatio = option.getWidth() * 1.0f / option.getHeight();
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if (aspectRatio > desiredAspectRatio) continue; //smaller than screen
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//try to find the best aspect ratio which fits in screen
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if (aspectRatio > bestAspectRatio) {
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if (option.getHeight() >= height && option.getWidth() >= width) {
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bigEnough.clear();
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bigEnough.add(option);
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bestAspectRatio = aspectRatio;
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}
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} else if (aspectRatio == bestAspectRatio) {
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if (option.getHeight() >= height && option.getWidth() >= width) {
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bigEnough.add(option);
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}
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}
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}
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if (exactSizeFound) {
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return desiredSize;
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}
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if (bigEnough.size() > 0) {
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final Size chosenSize = Collections.min(bigEnough, new Comparator<Size>() {
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@Override
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public int compare(Size lhs, Size rhs) {
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return Long.signum(
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(long) lhs.getWidth() * lhs.getHeight() - (long) rhs.getWidth() * rhs.getHeight());
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}
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});
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return chosenSize;
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} else {
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return choices[0];
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}
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}
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public static Bitmap rotateBitmap(Bitmap bitmap, int angle) {
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Matrix matrix = new Matrix();
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matrix.postRotate(angle);
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return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
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}
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public static List<Bitmap> bisectionBitmap(Bitmap bitmap) {
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List<Bitmap> bitmapList = new ArrayList<>();
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Bitmap left = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth() / 2, bitmap.getHeight(), null, true);
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bitmapList.add(left);
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Bitmap right = Bitmap.createBitmap(bitmap, bitmap.getWidth() / 2, 0, bitmap.getWidth() / 2, bitmap.getHeight(), null, true);
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bitmapList.add(right);
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return bitmapList;
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}
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}
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