57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
/* Copyright 2022 The MediaPipe Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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#ifndef MEDIAPIPE_TASKS_CC_VISION_UTILS_IMAGE_UTILS_H_
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#define MEDIAPIPE_TASKS_CC_VISION_UTILS_IMAGE_UTILS_H_
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#include <memory>
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#include <string>
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#include "absl/status/statusor.h"
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#include "mediapipe/framework/formats/image.h"
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#include "mediapipe/framework/formats/tensor.h"
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namespace mediapipe {
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namespace tasks {
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namespace vision {
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struct Shape {
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int height;
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int width;
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int channels;
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};
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// Decodes an image file and returns it as a mediapipe::Image object.
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//
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// Support a wide range of image formats (see stb_image.h for the full list), as
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// long as the image data is grayscale (1 channel), RGB (3 channels) or RGBA (4
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// channels).
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//
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// Note: this function is not optimized for speed, and thus shouldn't be used
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// outside of tests or simple CLI demo tools.
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absl::StatusOr<mediapipe::Image> DecodeImageFromFile(const std::string& path);
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// Get the shape of a image-like tensor.
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//
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// The tensor should have dimension 2, 3 or 4, representing `[height x width]`,
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// `[height x width x channels]`, or `[batch x height x width x channels]`.
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absl::StatusOr<Shape> GetImageLikeTensorShape(const mediapipe::Tensor& tensor);
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} // namespace vision
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} // namespace tasks
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} // namespace mediapipe
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#endif // MEDIAPIPE_TASKS_CC_VISION_UTILS_IMAGE_UTILS_H_
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