/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * 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.
 * =============================================================================
 */
import { Color, PartSegmentation, PersonSegmentation } from './types';
import { SemanticPartSegmentation, SemanticPersonSegmentation } from './types';
export type Canvas = HTMLCanvasElement | OffscreenCanvas;
type ImageType = HTMLImageElement | HTMLVideoElement | Canvas;
/**
 * Given the output from estimating multi-person segmentation, generates an
 * image with foreground and background color at each pixel determined by the
 * corresponding binary segmentation value at the pixel from the output.  In
 * other words, pixels where there is a person will be colored with foreground
 * color and where there is not a person will be colored with background color.
 *
 * @param personOrPartSegmentation The output from
 * `segmentPerson`, `segmentMultiPerson`,
 * `segmentPersonParts` or `segmentMultiPersonParts`. They can
 * be SemanticPersonSegmentation object, an array of PersonSegmentation object,
 * SemanticPartSegmentation object, or an array of PartSegmentation object.
 *
 * @param foreground Default to {r:0, g:0, b:0, a: 0}. The foreground color
 * (r,g,b,a) for visualizing pixels that belong to people.
 *
 * @param background Default to {r:0, g:0, b:0, a: 255}. The background color
 * (r,g,b,a) for visualizing pixels that don't belong to people.
 *
 * @param drawContour Default to false. Whether to draw the contour around each
 * person's segmentation mask or body part mask.
 *
 * @param foregroundIds Default to [1]. The integer values that represent
 * foreground. For person segmentation, 1 is the foreground. For body part
 * segmentation, it can be a subset of all body parts ids.
 *
 * @returns An ImageData with the same width and height of
 * all the PersonSegmentation in multiPersonSegmentation, with opacity and
 * transparency at each pixel determined by the corresponding binary
 * segmentation value at the pixel from the output.
 */
export declare function toMask(personOrPartSegmentation: SemanticPersonSegmentation | SemanticPartSegmentation | PersonSegmentation[] | PartSegmentation[], foreground?: Color, background?: Color, drawContour?: boolean, foregroundIds?: number[]): ImageData;
/**
 * Given the output from person body part segmentation (or multi-person
 * instance body part segmentation) and an array of colors indexed by part id,
 * generates an image with the corresponding color for each part at each pixel,
 * and white pixels where there is no part.
 *
 * @param partSegmentation The output from segmentPersonParts
 * or segmentMultiPersonParts. The former is a SemanticPartSegmentation
 * object and later is an array of PartSegmentation object.
 *
 * @param partColors A multi-dimensional array of rgb colors indexed by
 * part id.  Must have 24 colors, one for every part.
 *
 * @returns An ImageData with the same width and height of all the element in
 * multiPersonPartSegmentation, with the corresponding color for each part at
 * each pixel, and black pixels where there is no part.
 */
export declare function toColoredPartMask(partSegmentation: SemanticPartSegmentation | PartSegmentation[], partColors?: Array<[number, number, number]>): ImageData;
/**
 * Given an image and a maskImage of type ImageData, draws the image with the
 * mask on top of it onto a canvas.
 *
 * @param canvas The canvas to be drawn onto.
 *
 * @param image The original image to apply the mask to.
 *
 * @param maskImage An ImageData containing the mask.  Ideally this should be
 * generated by toMask or toColoredPartMask.
 *
 * @param maskOpacity The opacity of the mask when drawing it on top of the
 * image. Defaults to 0.7. Should be a float between 0 and 1.
 *
 * @param maskBlurAmount How many pixels to blur the mask by. Defaults to 0.
 * Should be an integer between 0 and 20.
 *
 * @param flipHorizontal If the result should be flipped horizontally.  Defaults
 * to false.
 */
export declare function drawMask(canvas: Canvas, image: ImageType, maskImage: ImageData | null, maskOpacity?: number, maskBlurAmount?: number, flipHorizontal?: boolean): void;
/**
 * Given an image and a maskImage of type ImageData, draws the image with the
 * pixelated mask on top of it onto a canvas.
 *
 * @param canvas The canvas to be drawn onto.
 *
 * @param image The original image to apply the mask to.
 *
 * @param maskImage An ImageData containing the mask.  Ideally this should be
 * generated by toColoredPartMask.
 *
 * @param maskOpacity The opacity of the mask when drawing it on top of the
 * image. Defaults to 0.7. Should be a float between 0 and 1.
 *
 * @param maskBlurAmount How many pixels to blur the mask by. Defaults to 0.
 * Should be an integer between 0 and 20.
 *
 * @param flipHorizontal If the result should be flipped horizontally.  Defaults
 * to false.
 *
 * @param pixelCellWidth The width of each pixel cell. Default to 10 px.
 */
export declare function drawPixelatedMask(canvas: Canvas, image: ImageType, maskImage: ImageData, maskOpacity?: number, maskBlurAmount?: number, flipHorizontal?: boolean, pixelCellWidth?: number): void;
/**
 * Given a personSegmentation and an image, draws the image with its background
 * blurred onto the canvas.
 *
 * @param canvas The canvas to draw the background-blurred image onto.
 *
 * @param image The image to blur the background of and draw.
 *
 * @param personSegmentation A SemanticPersonSegmentation or an array of
 * PersonSegmentation object.
 *
 * @param backgroundBlurAmount How many pixels in the background blend into each
 * other.  Defaults to 3. Should be an integer between 1 and 20.
 *
 * @param edgeBlurAmount How many pixels to blur on the edge between the person
 * and the background by.  Defaults to 3. Should be an integer between 0 and 20.
 *
 * @param flipHorizontal If the output should be flipped horizontally.  Defaults
 * to false.
 */
export declare function drawBokehEffect(canvas: Canvas, image: ImageType, multiPersonSegmentation: SemanticPersonSegmentation | PersonSegmentation[], backgroundBlurAmount?: number, edgeBlurAmount?: number, flipHorizontal?: boolean): void;
/**
 * Given a personSegmentation and an image, draws the image with its background
 * blurred onto the canvas.
 *
 * @param canvas The canvas to draw the background-blurred image onto.
 *
 * @param image The image to blur the background of and draw.
 *
 * @param partSegmentation A SemanticPartSegmentation or an array of
 * PartSegmentation object.
 *
 * @param bodyPartIdsToBlur Default to [0, 1] (left-face and right-face). An
 * array of body part ids to blur. Each must be one of the 24 body part ids.
 *
 * @param backgroundBlurAmount How many pixels in the background blend into each
 * other.  Defaults to 3. Should be an integer between 1 and 20.
 *
 * @param edgeBlurAmount How many pixels to blur on the edge between the person
 * and the background by.  Defaults to 3. Should be an integer between 0 and 20.
 *
 * @param flipHorizontal If the output should be flipped horizontally.  Defaults
 * to false.
 */
export declare function blurBodyPart(canvas: Canvas, image: ImageType, partSegmentation: SemanticPartSegmentation | PartSegmentation[], bodyPartIdsToBlur?: number[], backgroundBlurAmount?: number, edgeBlurAmount?: number, flipHorizontal?: boolean): void;
export {};