UIImage *image = [UIImage imageNamed:@"000.tiff"];UIImageView *imgView = [[UIImageView alloc]initWithFrame:CGRectMake(50, 50, 320, 328)];imgView.contentMode = UIViewContentModeScaleAspectFill;imgView.image = image;[self.view addSubview:imgView];CAShapeLayer *shapeLayer = [CAShapeLayer layer];shapeLayer.backgroundColor = [UIColor clearColor].CGColor;shapeLayer.path = [UIBezierPath bezierPathWithRoundedRect:imgView.bounds byRoundingCorners:UIRectCornerBottomRight cornerRadii:CGSizeMake(100.0, 100.0)].CGPath;imgView.layer.masksToBounds = YES;imgView.layer.mask = shapeLayer;shapeLayer.frame = imgView.layer.bounds;