MediaPipe TeamandSebastian Schmidt
4dc4b19ddb
GitOrigin-RevId: 1e13be30e2c6838d4a2ff768a39c414bc80534bb
55 lines
2.5 KiB
C++
55 lines
2.5 KiB
C++
// Copyright 2022 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// A collection of functions operating on MediaPipe::Location that require
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// OpenCV to either convert between formats, or apply OpenCV transformations.
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#ifndef MEDIAPIPE_FRAMEWORK_FORMATS_LOCATION_OPENCV_H_
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#define MEDIAPIPE_FRAMEWORK_FORMATS_LOCATION_OPENCV_H_
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#include "mediapipe/framework/formats/location.h"
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#include "mediapipe/framework/port/opencv_core_inc.h"
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namespace mediapipe {
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// Creates a location of type BOUNDING_BOX from an OpenCV rectangle.
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Location CreateBBoxLocation(const cv::Rect& rect);
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// Creates a location of type MASK from a single-channel uint8 or float
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// cv::Mat_ (type is CV_8UC1 or CV_32FC1). Check fails if the mat is not
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// single channel. Pixels with positive values are treated as the foreground.
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template <typename T>
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Location CreateCvMaskLocation(const cv::Mat_<T>& mask);
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// Enlarges the location by the given factor. This operation keeps the center
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// of the location fixed, while enlarging its dimensions by the given factor.
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// Note that the location may partially lie outside the image after this
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// operation.
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void EnlargeLocation(Location& location, float factor);
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// Same as Location::GetMask() with the difference that the return value is a
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// cv::Mat of type CV_8UC1. Background pixels are set to 0 and foreground pixels
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// are set to 255.
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std::unique_ptr<cv::Mat> GetCvMask(const Location& location);
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// Returns the provided location's RELATIVE_BOUNDING_BOX or MASK location
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// data as an OpenCV Mat. If the location data is in a format not directly
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// convertible to the specified return type the following conversion principles
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// are used:
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// - Rectangle -> Mask: the rectangle is converted to a mask with all
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// pixels inside the rectangle being foreground pixels.
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std::unique_ptr<cv::Mat> ConvertToCvMask(const Location& location,
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int image_width, int image_height);
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} // namespace mediapipe
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#endif // MEDIAPIPE_FRAMEWORK_FORMATS_LOCATION_OPENCV_H_
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