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checkpoints.ts
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checkpoints.ts
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/**
* @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
*
* https://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.
* =============================================================================
*/
const MOBILENET_BASE_URL =
'https://storage.googleapis.com/tfjs-models/savedmodel/posenet/mobilenet/';
const RESNET50_BASE_URL =
'https://storage.googleapis.com/tfjs-models/savedmodel/posenet/resnet50/';
// The PoseNet 2.0 ResNet50 models use the latest TensorFlow.js 1.0 model
// format.
export function resNet50Checkpoint(stride: number, quantBytes: number): string {
const graphJson = `model-stride${stride}.json`;
// quantBytes=4 corresponding to the non-quantized full-precision checkpoints.
if (quantBytes === 4) {
return RESNET50_BASE_URL + `float/` + graphJson;
} else {
return RESNET50_BASE_URL + `quant${quantBytes}/` + graphJson;
}
}
// The PoseNet 2.0 MobileNetV1 models use the latest TensorFlow.js 1.0 model
// format.
export function mobileNetCheckpoint(
stride: number, multiplier: number, quantBytes: number): string {
const toStr: {[key: number]: string} = {1.0: '100', 0.75: '075', 0.50: '050'};
const graphJson = `model-stride${stride}.json`;
// quantBytes=4 corresponding to the non-quantized full-precision checkpoints.
if (quantBytes === 4) {
return MOBILENET_BASE_URL + `float/${toStr[multiplier]}/` + graphJson;
} else {
return MOBILENET_BASE_URL + `quant${quantBytes}/${toStr[multiplier]}/` +
graphJson;
}
}