Hi I'm writing a game and I'm trying to do some pixel perfect collisions with paths. The player's character has a bitmask which looks for example like this:

Currenly my code that handles player's collision with path looks like this:

private boolean isTerrainCollisionDetected() {      
    if(collisionRegion.op(player.getBounds(), terrain.getBottomPathBounds(), Region.Op.INTERSECT) 
            || collisionRegion.op(player.getBounds(), terrain.getTopPathBounds(), Region.Op.INTERSECT)) {
        collisionRegion.getBounds(collisionRect);
        for(int i = collisionRect.left; i < collisionRect.right; i++) {
            for(int j = collisionRect.top; j < collisionRect.bottom; j++) {
                if(player.getBitmask().getPixel(i - player.getX(), j - player.getY()) != Color.TRANSPARENT) {
                    return true;
                }
            }
        }
    }
    return false;
}

The problem is that collisions aren't pixel perfect. It detects collisions in situations like this:

The question is: what can I do to improve my collision detection?