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BoofCV is an open source Java library for real-time computer vision and robotics applications.

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/*
 * Copyright (c) 2021, Peter Abeles. All Rights Reserved.
 *
 * This file is part of BoofCV (http://boofcv.org).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package boofcv.alg.interpolate;

import boofcv.struct.image.ImageGray;

/**
 * Interface for interpolation between pixels on a per-pixel basis for a single band image.
 *
 * @author Peter Abeles
 */
public interface InterpolatePixelS> extends InterpolatePixel {

	/**
	 * Returns the interpolated pixel value at the specified location while checking to see if
	 * border conditions apply. If the requested pixel is outside the image border it will attempt
	 * to process it using or throw a null pointer exception of a border handler has not been specified.
	 *
	 * @param x Point's x-coordinate. x ≥ 0 && x < image.width or all values if border specified
	 * @param y Point's y-coordinate. y ≥ 0 && y < image.height or all values if border specified
	 * @return Interpolated intensity value or NaN if it can't be interpolated.
	 */
	float get( float x, float y );

	/**
	 * Returns the interpolated pixel value at the specified location while assuming it is inside
	 * the image far away from the border. For any input point {@link #isInFastBounds} should return true.
	 *
	 * @param x Point's x-coordinate.
	 * @param y Point's y-coordinate.
	 * @return Interpolated intensity value.
	 */
	float get_fast( float x, float y );

	/**
	 * Creates a new instance of this interpolation method
	 */
	@Override
	InterpolatePixelS copy();
}