华为头发分割重调空输出

Question

我正在尝试在 Android 上运行头发分割，但它不起作用。它返回空结果作为输出，而人工分割工作得很好。

这是代码。

public class MainActivity extends AppCompatActivity {

MLImageSegmentationAnalyzer analyzer;
Bitmap originialBitmap;
Bitmap foregroundBitmap;
ImageView imageView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    imageView = (ImageView) findViewById(R.id.imageView);

    Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.person);
    bitmap = Bitmap.createScaledBitmap(bitmap, 1000, 1500, true);

    createImageTransactor(bitmap);

}

private void createImageTransactor(Bitmap bitmap) {
    MLImageSegmentationSetting setting = new MLImageSegmentationSetting.Factory()
            .setExact(true)
            .setAnalyzerType(MLImageSegmentationSetting.HAIR_SEG)
            .create();

    this.analyzer = MLAnalyzerFactory.getInstance().getImageSegmentationAnalyzer(setting);
    MLFrame mlFrame = new MLFrame.Creator().setBitmap(bitmap).create();
    Task<MLImageSegmentation> task = this.analyzer.asyncAnalyseFrame(mlFrame);
    task.addOnSuccessListener(new OnSuccessListener<MLImageSegmentation>() {
        @Override
        public void onSuccess(MLImageSegmentation mlImageSegmentationResults) {
            // Transacting logic for segment success.
            if (mlImageSegmentationResults != null) {
                Toast.makeText(MainActivity.this, "Success", Toast.LENGTH_SHORT).show();
                foregroundBitmap = mlImageSegmentationResults.getGrayscale();
                imageView.setImageBitmap(foregroundBitmap);
            } else {
                Toast.makeText(MainActivity.this, "Failure", Toast.LENGTH_SHORT).show();
            }
        }
    }).addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(Exception e) {
            Toast.makeText(MainActivity.this, "Failure", Toast.LENGTH_SHORT).show();

            // Transacting logic for segment failure.
            return;
        }
    });
}


}

这是 gradle 文件。

implementation 'com.huawei.hms:ml-computer-vision-cloud:2.0.5.300'
implementation 'com.huawei.hms:ml-computer-vision-segmentation:2.2.0.300'

implementation 'com.huawei.hms:ml-computer-vision-image-segmentation-body-model:2.2.0.300'
implementation 'com.huawei.hms:ml-computer-vision-image-segmentation-multiclass-model:2.2.0.300'
implementation 'com.huawei.hms:ml-computer-vision-image-segmentation-hair-model:2.2.0.300'

但是当代码运行时，它会输出空图像，并且分割结果中的掩码在数组中包含整个 0。

请告诉我是什么问题。

Answer 1

你可以参考sample code中的HairSegmentationStillAnalyseActivity类：

public class HairSegmentationStillAnalyseActivity extends AppCompatActivity implements View.OnClickListener {
    private static final String TAG = HairSegmentationStillAnalyseActivity.class.getSimpleName();

    private MLImageSegmentationAnalyzer analyzer;

    private ImageView mImageView;

    private Bitmap bitmap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.activity_image_segmentation_analyse);
        this.findViewById(R.id.segment_detect).setOnClickListener(this);
        this.mImageView = this.findViewById(R.id.image_result);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.segment_detect:
                this.analyzer();
                break;
            default:
                break;
        }
    }

    private void analyzer() {
        /**
         * Configure image segmentation analyzer with custom parameter MLImageSegmentationSetting.
         *
         * setExact(): Set the segmentation fine mode, true is the fine segmentation mode,
         *     and false is the speed priority segmentation mode.
         * setAnalyzerType(): Set the segmentation mode. When segmenting a static image, support setting
         *     MLImageSegmentationSetting.BODY_SEG (only segment human body and background)
         *     and MLImageSegmentationSetting.IMAGE_SEG (segment 10 categories of scenes, including human bodies)
         * setScene(): Set the type of the returned results. This configuration takes effect only in
         *     MLImageSegmentationSetting.BODY_SEG mode. In MLImageSegmentationSetting.IMAGE_SEG mode,
         *     only pixel-level tagging information is returned.
         *     Supports setting MLImageSegmentationScene.ALL (returns all segmentation results,
         *     including: pixel-level tag information, portrait images with transparent backgrounds
         *     and portraits are white, gray background with black background),
         *     MLImageSegmentationScene.MASK_ONLY (returns only pixel-level tag information),
         *     MLImageSegmentationScene .FOREGROUND_ONLY (returns only portrait images with transparent background),
         *     MLImageSegmentationScene.GRAYSCALE_ONLY (returns only grayscale images with white portrait and black background).
         */
        MLImageSegmentationSetting setting = new MLImageSegmentationSetting.Factory()
                .setExact(false)
                .setAnalyzerType(MLImageSegmentationSetting.HAIR_SEG)
                .create();
        this.analyzer = MLAnalyzerFactory.getInstance().getImageSegmentationAnalyzer(setting);
        // Create an MLFrame by using android.graphics.Bitmap. Recommended image size: large than 224*224.
        this.bitmap = BitmapFactory.decodeResource(this.getResources(), R.drawable.imgseg_foreground);
        MLFrame mlFrame = new MLFrame.Creator().setBitmap(this.bitmap).create();
        Task<MLImageSegmentation> task = this.analyzer.asyncAnalyseFrame(mlFrame);
        task.addOnSuccessListener(new OnSuccessListener<MLImageSegmentation>() {
            @Override
            public void onSuccess(MLImageSegmentation imageSegmentationResult) {
                // Processing logic for recognition success.
                if (imageSegmentationResult != null) {
                    HairSegmentationStillAnalyseActivity.this.displaySuccess(imageSegmentationResult);
                } else {
                    HairSegmentationStillAnalyseActivity.this.displayFailure("imageSegmentationResult is null.");
                }
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(Exception e) {
                // Processing logic for recognition failure.
                HairSegmentationStillAnalyseActivity.this.displayFailure(e.getMessage());
            }
        });
    }

    private void displaySuccess(MLImageSegmentation imageSegmentationResult) {
        if (this.bitmap == null) {
            this.displayFailure("bitmap is null.");
            return;
        }
        // Draw the portrait with a transparent background.
        if (imageSegmentationResult.getMasks() == null) {
            return;
        }
        Bitmap processedBitmap = null;
        int[] pixels = byteArrToIntArr(imageSegmentationResult.getMasks());
        processedBitmap = Bitmap.createBitmap(pixels, 0, bitmap.getWidth(), bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);

        if (processedBitmap != null) {
            this.mImageView.setImageBitmap(processedBitmap);
        } else {
            this.displayFailure("bitmapFore is null.");
        }
    }

    private void displayFailure(String str) {
        Log.e(TAG, str);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (this.analyzer != null) {
            try {
                this.analyzer.stop();
            } catch (IOException e) {
                Log.e(TAG, "Stop failed: " + e.getMessage());
            }
        }
    }

    /**
     * masking
     * @param masks
     * @return
     */
    private int[] byteArrToIntArr(byte[] masks) {
        int[] results = new int[masks.length];
        for (int i = 0; i < masks.length; i++) {
            if (masks[i] == 1) {
                results[i] = Color.WHITE;
            } else if (masks[i] == 2) {
                results[i] = Color.BLUE;
            } else if (masks[i] == 3) {
                results[i] = Color.DKGRAY;
            } else if (masks[i] == 4) {
                results[i] = Color.YELLOW;
            } else if (masks[i] == 5) {
                results[i] = Color.LTGRAY;
            } else if (masks[i] == 6) {
                results[i] = Color.CYAN;
            } else if (masks[i] == 7) {
                results[i] = Color.RED;
            } else if (masks[i] == 8) {
                results[i] = Color.GRAY;
            } else if (masks[i] == 9) {
                results[i] = Color.MAGENTA;
            } else if (masks[i] == 10) {
                results[i] = Color.GREEN;
            } else {
                results[i] = Color.BLACK;
            }
        }
        return results;
    }
}