64 lines
2.3 KiB
Protocol Buffer
64 lines
2.3 KiB
Protocol Buffer
// Copyright 2020 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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syntax = "proto2";
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package mediapipe.face_geometry;
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import "mediapipe/modules/face_geometry/protos/mesh_3d.proto";
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option java_package = "com.google.mediapipe.modules.facegeometry";
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option java_outer_classname = "GeometryPipelineMetadataProto";
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enum InputSource {
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DEFAULT = 0; // FACE_LANDMARK_PIPELINE
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FACE_LANDMARK_PIPELINE = 1;
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FACE_DETECTION_PIPELINE = 2;
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}
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message WeightedLandmarkRef {
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// Defines the landmark ID. References an existing face landmark ID.
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optional uint32 landmark_id = 1;
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// Defines the landmark weight. The larger the weight the more influence this
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// landmark has in the basis.
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//
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// Is positive.
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optional float weight = 2;
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}
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// Next field ID: 4
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message GeometryPipelineMetadata {
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// Defines the source of the input landmarks to let the underlying geometry
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// pipeline to adjust in order to produce the best results.
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//
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// Face landmark pipeline is expected to produce 3D landmarks with relative Z
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// coordinate, which is scaled as the X coordinate assuming the weak
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// perspective projection camera model.
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//
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// Face landmark pipeline is expected to produce 2D landmarks with Z
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// coordinate being equal to 0.
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optional InputSource input_source = 3;
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// Defines a mesh surface for a canonical face. The canonical face mesh vertex
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// IDs are the same as the face landmark IDs.
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//
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// XYZ coordinates are defined in centimeter units.
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optional Mesh3d canonical_mesh = 1;
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// Defines a weighted landmark basis for running the Procrustes solver
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// algorithm inside the geometry pipeline.
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//
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// A good basis sets face landmark weights in way to distinguish a head pose
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// change from a facial expression change and to only respond to the former.
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repeated WeightedLandmarkRef procrustes_landmark_basis = 2;
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}
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