Bad Image Quality After Resizing/Scaling Bitmap

Bad image quality after resizing/scaling bitmap

I had blury images on low screen resolutions until I disabled scaling on bitmap load from resources:

Options options = new BitmapFactory.Options();
    options.inScaled = false;
    Bitmap source = BitmapFactory.decodeResource(a.getResources(), path, options);

Bitmap scale destroy quality

I have found a solution here and it works great.

Here is the part of the code for scaling the image:

public Bitmap getResizedBitmap(Bitmap bitmap, int newWidth, int newHeight) {
        Bitmap resizedBitmap = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);

        float scaleX = newWidth / (float) bitmap.getWidth();
        float scaleY = newHeight / (float) bitmap.getHeight();
        float pivotX = 0;
        float pivotY = 0;

        Matrix scaleMatrix = new Matrix();
        scaleMatrix.setScale(scaleX, scaleY, pivotX, pivotY);

        Canvas canvas = new Canvas(resizedBitmap);
        canvas.setMatrix(scaleMatrix);
        canvas.drawBitmap(bitmap, 0, 0, new Paint(Paint.FILTER_BITMAP_FLAG));

        return resizedBitmap;
    }

HTML5 Image quality after scaling bitmap is bad

Unfortunately this is how Canvas renders the bitmap, and its not something that can be controlled by JavaScript. It is possible to get some results in various browsers using the `context.imageSmoothingEnabled' property, but currently it requires vendor prefixes. Check out this thread:
Canvas Image Smoothing

To do this with EaselJS, you need to get the canvas context, which is not currently available without manually accessing it:

var context = myStage.canvas.getContext("2d");
context.webkitImageSmoothingEnabled = context.mozImageSmoothingEnabled = true;

Android: Resizing Bitmaps without losing quality

Try Bitmap.createScaledBitmap.
It also has an option to filter the source.

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