data2/LocalFaceRecognition.git

/**
 * @license
 * Copyright 2018 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 { ENGINE } from './engine';
import { env } from './environment';
import { setDeprecationWarningFn } from './tensor';
import { getTensorsInContainer } from './tensor_util';
/**
 * Enables production mode which disables correctness checks in favor of
 * performance.
 *
 * @doc {heading: 'Environment'}
 */
export function enableProdMode() {
    env().set('PROD', true);
}
/**
 * Enables debug mode which will log information about all executed kernels:
 * the elapsed time of the kernel execution, as well as the rank, shape, and
 * size of the output tensor.
 *
 * Debug mode will significantly slow down your application as it will
 * download the result of every operation to the CPU. This should not be used in
 * production. Debug mode does not affect the timing information of the kernel
 * execution as we do not measure download time in the kernel execution time.
 *
 * See also: `tf.profile`, `tf.memory`.
 *
 * @doc {heading: 'Environment'}
 */
export function enableDebugMode() {
    env().set('DEBUG', true);
}
/** Globally disables deprecation warnings */
export function disableDeprecationWarnings() {
    env().set('DEPRECATION_WARNINGS_ENABLED', false);
    console.warn(`TensorFlow.js deprecation warnings have been disabled.`);
}
/** Warn users about deprecated functionality. */
export function deprecationWarn(msg) {
    if (env().getBool('DEPRECATION_WARNINGS_ENABLED')) {
        console.warn(msg + ' You can disable deprecation warnings with ' +
            'tf.disableDeprecationWarnings().');
    }
}
setDeprecationWarningFn(deprecationWarn);
/**
 * Dispose all variables kept in backend engine.
 *
 * @doc {heading: 'Environment'}
 */
export function disposeVariables() {
    ENGINE.disposeVariables();
}
/**
 * It returns the global engine that keeps track of all tensors and backends.
 *
 * @doc {heading: 'Environment'}
 */
export function engine() {
    return ENGINE;
}
/**
 * Returns memory info at the current time in the program. The result is an
 * object with the following properties:
 *
 * - `numBytes`: Number of bytes allocated (undisposed) at this time.
 * - `numTensors`: Number of unique tensors allocated.
 * - `numDataBuffers`: Number of unique data buffers allocated
 *   (undisposed) at this time, which is ≤ the number of tensors
 *   (e.g. `a.reshape(newShape)` makes a new Tensor that shares the same
 *   data buffer with `a`).
 * - `unreliable`: True if the memory usage is unreliable. See `reasons` when
 *    `unreliable` is true.
 * - `reasons`: `string[]`, reasons why the memory is unreliable, present if
 *    `unreliable` is true.
 *
 * WebGL Properties:
 * - `numBytesInGPU`: Number of bytes allocated (undisposed) in the GPU only at
 *     this time.
 *
 * @doc {heading: 'Performance', subheading: 'Memory'}
 */
export function memory() {
    return ENGINE.memory();
}
/**
 * Executes the provided function `f()` and returns a promise that resolves
 * with information about the function's memory use:
 * - `newBytes`: the number of new bytes allocated
 * - `newTensors`: the number of new tensors created
 * - `peakBytes`: the peak number of bytes allocated
 * - `kernels`: an array of objects for each kernel involved that reports
 * their input and output shapes, number of bytes used, and number of new
 * tensors created.
 * - `kernelNames`: an array of unique strings with just the names of the
 * kernels in the `kernels` array.
 *
 * ```js
 * const profile = await tf.profile(() => {
 *   const x = tf.tensor1d([1, 2, 3]);
 *   let x2 = x.square();
 *   x2.dispose();
 *   x2 = x.square();
 *   x2.dispose();
 *   return x;
 * });
 *
 * console.log(`newBytes: ${profile.newBytes}`);
 * console.log(`newTensors: ${profile.newTensors}`);
 * console.log(`byte usage over all kernels: ${profile.kernels.map(k =>
 * k.totalBytesSnapshot)}`);
 * ```
 *
 *
 * @doc {heading: 'Performance', subheading: 'Profile'}
 */
export function profile(f) {
    return ENGINE.profile(f);
}
/**
 * Executes the provided function `fn` and after it is executed, cleans up all
 * intermediate tensors allocated by `fn` except those returned by `fn`.
 * `fn` must not return a Promise (async functions not allowed). The returned
 * result can be a complex object.
 *
 * Using this method helps avoid memory leaks. In general, wrap calls to
 * operations in `tf.tidy` for automatic memory cleanup.
 *
 * NOTE: Variables do *not* get cleaned up when inside a tidy(). If you want to
 * dispose variables, please use `tf.disposeVariables` or call dispose()
 * directly on variables.
 *
 * ```js
 * // y = 2 ^ 2 + 1
 * const y = tf.tidy(() => {
 *   // a, b, and one will be cleaned up when the tidy ends.
 *   const one = tf.scalar(1);
 *   const a = tf.scalar(2);
 *   const b = a.square();
 *
 *   console.log('numTensors (in tidy): ' + tf.memory().numTensors);
 *
 *   // The value returned inside the tidy function will return
 *   // through the tidy, in this case to the variable y.
 *   return b.add(one);
 * });
 *
 * console.log('numTensors (outside tidy): ' + tf.memory().numTensors);
 * y.print();
 * ```
 *
 * @param nameOrFn The name of the closure, or the function to execute.
 *     If a name is provided, the 2nd argument should be the function.
 *     If debug mode is on, the timing and the memory usage of the function
 *     will be tracked and displayed on the console using the provided name.
 * @param fn The function to execute.
 *
 * @doc {heading: 'Performance', subheading: 'Memory'}
 */
export function tidy(nameOrFn, fn) {
    return ENGINE.tidy(nameOrFn, fn);
}
/**
 * Disposes any `tf.Tensor`s found within the provided object.
 *
 * @param container an object that may be a `tf.Tensor` or may directly
 *     contain `tf.Tensor`s, such as a `Tensor[]` or `{key: Tensor, ...}`. If
 *     the object is not a `tf.Tensor` or does not contain `Tensors`, nothing
 *     happens. In general it is safe to pass any object here, except that
 *     `Promise`s are not supported.
 *
 * @doc {heading: 'Performance', subheading: 'Memory'}
 */
export function dispose(container) {
    const tensors = getTensorsInContainer(container);
    tensors.forEach(tensor => tensor.dispose());
}
/**
 * Keeps a `tf.Tensor` generated inside a `tf.tidy` from being disposed
 * automatically.
 *
 * ```js
 * let b;
 * const y = tf.tidy(() => {
 *   const one = tf.scalar(1);
 *   const a = tf.scalar(2);
 *
 *   // b will not be cleaned up by the tidy. a and one will be cleaned up
 *   // when the tidy ends.
 *   b = tf.keep(a.square());
 *
 *   console.log('numTensors (in tidy): ' + tf.memory().numTensors);
 *
 *   // The value returned inside the tidy function will return
 *   // through the tidy, in this case to the variable y.
 *   return b.add(one);
 * });
 *
 * console.log('numTensors (outside tidy): ' + tf.memory().numTensors);
 * console.log('y:');
 * y.print();
 * console.log('b:');
 * b.print();
 * ```
 *
 * @param result The tensor to keep from being disposed.
 *
 * @doc {heading: 'Performance', subheading: 'Memory'}
 */
export function keep(result) {
    return ENGINE.keep(result);
}
/**
 * Executes `f()` and returns a promise that resolves with timing
 * information.
 *
 * The result is an object with the following properties:
 *
 * - `wallMs`: Wall execution time.
 * - `kernelMs`: Kernel execution time, ignoring data transfer. If using the
 * WebGL backend and the query timer extension is not available, this will
 * return an error object.
 * - On `WebGL` The following additional properties exist:
 *   - `uploadWaitMs`: CPU blocking time on texture uploads.
 *   - `downloadWaitMs`: CPU blocking time on texture downloads (readPixels).
 *
 * ```js
 * const x = tf.randomNormal([20, 20]);
 * const time = await tf.time(() => x.matMul(x));
 *
 * console.log(`kernelMs: ${time.kernelMs}, wallTimeMs: ${time.wallMs}`);
 * ```
 *
 * @param f The function to execute and time.
 *
 * @doc {heading: 'Performance', subheading: 'Timing'}
 */
export function time(f) {
    return ENGINE.time(f);
}
/**
 * Sets the backend (cpu, webgl, wasm, etc) responsible for creating tensors and
 * executing operations on those tensors. Returns a promise that resolves
 * to a boolean if the backend initialization was successful.
 *
 * Note this disposes the current backend, if any, as well as any tensors
 * associated with it. A new backend is initialized, even if it is of the
 * same type as the previous one.
 *
 * @param backendName The name of the backend. Currently supports
 *     `'webgl'|'cpu'` in the browser, `'tensorflow'` under node.js
 *     (requires tfjs-node), and `'wasm'` (requires tfjs-backend-wasm).
 *
 * @doc {heading: 'Backends'}
 */
export function setBackend(backendName) {
    return ENGINE.setBackend(backendName);
}
/**
 * Returns a promise that resolves when the currently selected backend (or the
 * highest priority one) has initialized. Await this promise when you are using
 * a backend that has async initialization.
 *
 * @doc {heading: 'Backends'}
 */
export function ready() {
    return ENGINE.ready();
}
/**
 * Returns the current backend name (cpu, webgl, etc). The backend is
 * responsible for creating tensors and executing operations on those tensors.
 *
 * @doc {heading: 'Backends'}
 */
export function getBackend() {
    return ENGINE.backendName;
}
/**
 * Removes a backend and the registered factory.
 *
 * @doc {heading: 'Backends'}
 */
export function removeBackend(name) {
    ENGINE.removeBackend(name);
}
/**
 * Finds the backend registered under the provided name. Returns null if the
 * name is not in the registry, or the registration hasn't finished yet.
 */
export function findBackend(name) {
    return ENGINE.findBackend(name);
}
/**
 * Finds the backend factory registered under the provided name. Returns a
 * function that produces a new backend when called. Returns null if the name
 * is not in the registry.
 */
export function findBackendFactory(name) {
    return ENGINE.findBackendFactory(name);
}
/**
 * Registers a global backend. The registration should happen when importing
 * a module file (e.g. when importing `backend_webgl.ts`), and is used for
 * modular builds (e.g. custom tfjs bundle with only webgl support).
 *
 * @param factory The backend factory function. When called, it should
 * return a backend instance, or a promise of an instance.
 * @param priority The priority of the backend (higher = more important).
 *     In case multiple backends are registered, the priority is used to find
 *     the best backend. Defaults to 1.
 * @return False if there is already a registered backend under this name, true
 *     if not.
 *
 * @doc {heading: 'Backends'}
 */
export function registerBackend(name, factory, priority = 1) {
    return ENGINE.registerBackend(name, factory, priority);
}
/**
 * Gets the current backend. If no backends have been initialized, this will
 * attempt to initialize the best backend. Will throw an error if the highest
 * priority backend has async initialization, in which case you should call
 * 'await tf.ready()' before running other code.
 *
 * @doc {heading: 'Backends'}
 */
export function backend() {
    return ENGINE.backend;
}
/**
 * Sets the global platform.
 *
 * @param platformName The name of this platform.
 * @param platform A platform implementation.
 */
export function setPlatform(platformName, platform) {
    env().setPlatform(platformName, platform);
}
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All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport {KernelBackend} from './backends/backend';\nimport {ENGINE, Engine, MemoryInfo, ProfileInfo, ScopeFn, TimingInfo} from './engine';\nimport {env} from './environment';\n\nimport {Platform} from './platforms/platform';\nimport {setDeprecationWarningFn, Tensor} from './tensor';\nimport {TensorContainer} from './tensor_types';\nimport {getTensorsInContainer} from './tensor_util';\n\n/**\n * Enables production mode which disables correctness checks in favor of\n * performance.\n *\n * @doc {heading: 'Environment'}\n */\nexport function enableProdMode(): void {\n  env().set('PROD', true);\n}\n\n/**\n * Enables debug mode which will log information about all executed kernels:\n * the elapsed time of the kernel execution, as well as the rank, shape, and\n * size of the output tensor.\n *\n * Debug mode will significantly slow down your application as it will\n * download the result of every operation to the CPU. This should not be used in\n * production. Debug mode does not affect the timing information of the kernel\n * execution as we do not measure download time in the kernel execution time.\n *\n * See also: `tf.profile`, `tf.memory`.\n *\n * @doc {heading: 'Environment'}\n */\nexport function enableDebugMode(): void {\n  env().set('DEBUG', true);\n}\n\n/** Globally disables deprecation warnings */\nexport function disableDeprecationWarnings(): void {\n  env().set('DEPRECATION_WARNINGS_ENABLED', false);\n  console.warn(`TensorFlow.js deprecation warnings have been disabled.`);\n}\n\n/** Warn users about deprecated functionality. */\nexport function deprecationWarn(msg: string) {\n  if (env().getBool('DEPRECATION_WARNINGS_ENABLED')) {\n    console.warn(\n        msg + ' You can disable deprecation warnings with ' +\n        'tf.disableDeprecationWarnings().');\n  }\n}\nsetDeprecationWarningFn(deprecationWarn);\n\n/**\n * Dispose all variables kept in backend engine.\n *\n * @doc {heading: 'Environment'}\n */\nexport function disposeVariables(): void {\n  ENGINE.disposeVariables();\n}\n\n/**\n * It returns the global engine that keeps track of all tensors and backends.\n *\n * @doc {heading: 'Environment'}\n */\nexport function engine(): Engine {\n  return ENGINE;\n}\n\n/**\n * Returns memory info at the current time in the program. The result is an\n * object with the following properties:\n *\n * - `numBytes`: Number of bytes allocated (undisposed) at this time.\n * - `numTensors`: Number of unique tensors allocated.\n * - `numDataBuffers`: Number of unique data buffers allocated\n *   (undisposed) at this time, which is ≤ the number of tensors\n *   (e.g. `a.reshape(newShape)` makes a new Tensor that shares the same\n *   data buffer with `a`).\n * - `unreliable`: True if the memory usage is unreliable. See `reasons` when\n *    `unreliable` is true.\n * - `reasons`: `string[]`, reasons why the memory is unreliable, present if\n *    `unreliable` is true.\n *\n * WebGL Properties:\n * - `numBytesInGPU`: Number of bytes allocated (undisposed) in the GPU only at\n *     this time.\n *\n * @doc {heading: 'Performance', subheading: 'Memory'}\n */\nexport function memory(): MemoryInfo {\n  return ENGINE.memory();\n}\n\n/**\n * Executes the provided function `f()` and returns a promise that resolves\n * with information about the function's memory use:\n * - `newBytes`: the number of new bytes allocated\n * - `newTensors`: the number of new tensors created\n * - `peakBytes`: the peak number of bytes allocated\n * - `kernels`: an array of objects for each kernel involved that reports\n * their input and output shapes, number of bytes used, and number of new\n * tensors created.\n * - `kernelNames`: an array of unique strings with just the names of the\n * kernels in the `kernels` array.\n *\n * ```js\n * const profile = await tf.profile(() => {\n *   const x = tf.tensor1d([1, 2, 3]);\n *   let x2 = x.square();\n *   x2.dispose();\n *   x2 = x.square();\n *   x2.dispose();\n *   return x;\n * });\n *\n * console.log(`newBytes: ${profile.newBytes}`);\n * console.log(`newTensors: ${profile.newTensors}`);\n * console.log(`byte usage over all kernels: ${profile.kernels.map(k =>\n * k.totalBytesSnapshot)}`);\n * ```\n *\n *\n * @doc {heading: 'Performance', subheading: 'Profile'}\n */\nexport function profile(f: () => (TensorContainer | Promise<TensorContainer>)):\n    Promise<ProfileInfo> {\n  return ENGINE.profile(f);\n}\n\n/**\n * Executes the provided function `fn` and after it is executed, cleans up all\n * intermediate tensors allocated by `fn` except those returned by `fn`.\n * `fn` must not return a Promise (async functions not allowed). The returned\n * result can be a complex object.\n *\n * Using this method helps avoid memory leaks. In general, wrap calls to\n * operations in `tf.tidy` for automatic memory cleanup.\n *\n * NOTE: Variables do *not* get cleaned up when inside a tidy(). If you want to\n * dispose variables, please use `tf.disposeVariables` or call dispose()\n * directly on variables.\n *\n * ```js\n * // y = 2 ^ 2 + 1\n * const y = tf.tidy(() => {\n *   // a, b, and one will be cleaned up when the tidy ends.\n *   const one = tf.scalar(1);\n *   const a = tf.scalar(2);\n *   const b = a.square();\n *\n *   console.log('numTensors (in tidy): ' + tf.memory().numTensors);\n *\n *   // The value returned inside the tidy function will return\n *   // through the tidy, in this case to the variable y.\n *   return b.add(one);\n * });\n *\n * console.log('numTensors (outside tidy): ' + tf.memory().numTensors);\n * y.print();\n * ```\n *\n * @param nameOrFn The name of the closure, or the function to execute.\n *     If a name is provided, the 2nd argument should be the function.\n *     If debug mode is on, the timing and the memory usage of the function\n *     will be tracked and displayed on the console using the provided name.\n * @param fn The function to execute.\n *\n * @doc {heading: 'Performance', subheading: 'Memory'}\n */\nexport function tidy<T extends TensorContainer>(\n    nameOrFn: string|ScopeFn<T>, fn?: ScopeFn<T>): T {\n  return ENGINE.tidy(nameOrFn, fn);\n}\n\n/**\n * Disposes any `tf.Tensor`s found within the provided object.\n *\n * @param container an object that may be a `tf.Tensor` or may directly\n *     contain `tf.Tensor`s, such as a `Tensor[]` or `{key: Tensor, ...}`. If\n *     the object is not a `tf.Tensor` or does not contain `Tensors`, nothing\n *     happens. In general it is safe to pass any object here, except that\n *     `Promise`s are not supported.\n *\n * @doc {heading: 'Performance', subheading: 'Memory'}\n */\nexport function dispose(container: TensorContainer) {\n  const tensors = getTensorsInContainer(container);\n  tensors.forEach(tensor => tensor.dispose());\n}\n\n/**\n * Keeps a `tf.Tensor` generated inside a `tf.tidy` from being disposed\n * automatically.\n *\n * ```js\n * let b;\n * const y = tf.tidy(() => {\n *   const one = tf.scalar(1);\n *   const a = tf.scalar(2);\n *\n *   // b will not be cleaned up by the tidy. a and one will be cleaned up\n *   // when the tidy ends.\n *   b = tf.keep(a.square());\n *\n *   console.log('numTensors (in tidy): ' + tf.memory().numTensors);\n *\n *   // The value returned inside the tidy function will return\n *   // through the tidy, in this case to the variable y.\n *   return b.add(one);\n * });\n *\n * console.log('numTensors (outside tidy): ' + tf.memory().numTensors);\n * console.log('y:');\n * y.print();\n * console.log('b:');\n * b.print();\n * ```\n *\n * @param result The tensor to keep from being disposed.\n *\n * @doc {heading: 'Performance', subheading: 'Memory'}\n */\nexport function keep<T extends Tensor>(result: T): T {\n  return ENGINE.keep(result);\n}\n\n/**\n * Executes `f()` and returns a promise that resolves with timing\n * information.\n *\n * The result is an object with the following properties:\n *\n * - `wallMs`: Wall execution time.\n * - `kernelMs`: Kernel execution time, ignoring data transfer. If using the\n * WebGL backend and the query timer extension is not available, this will\n * return an error object.\n * - On `WebGL` The following additional properties exist:\n *   - `uploadWaitMs`: CPU blocking time on texture uploads.\n *   - `downloadWaitMs`: CPU blocking time on texture downloads (readPixels).\n *\n * ```js\n * const x = tf.randomNormal([20, 20]);\n * const time = await tf.time(() => x.matMul(x));\n *\n * console.log(`kernelMs: ${time.kernelMs}, wallTimeMs: ${time.wallMs}`);\n * ```\n *\n * @param f The function to execute and time.\n *\n * @doc {heading: 'Performance', subheading: 'Timing'}\n */\nexport function time(f: () => void): Promise<TimingInfo> {\n  return ENGINE.time(f);\n}\n\n/**\n * Sets the backend (cpu, webgl, wasm, etc) responsible for creating tensors and\n * executing operations on those tensors. Returns a promise that resolves\n * to a boolean if the backend initialization was successful.\n *\n * Note this disposes the current backend, if any, as well as any tensors\n * associated with it. A new backend is initialized, even if it is of the\n * same type as the previous one.\n *\n * @param backendName The name of the backend. Currently supports\n *     `'webgl'|'cpu'` in the browser, `'tensorflow'` under node.js\n *     (requires tfjs-node), and `'wasm'` (requires tfjs-backend-wasm).\n *\n * @doc {heading: 'Backends'}\n */\nexport function setBackend(backendName: string): Promise<boolean> {\n  return ENGINE.setBackend(backendName);\n}\n\n/**\n * Returns a promise that resolves when the currently selected backend (or the\n * highest priority one) has initialized. Await this promise when you are using\n * a backend that has async initialization.\n *\n * @doc {heading: 'Backends'}\n */\nexport function ready(): Promise<void> {\n  return ENGINE.ready();\n}\n\n/**\n * Returns the current backend name (cpu, webgl, etc). The backend is\n * responsible for creating tensors and executing operations on those tensors.\n *\n * @doc {heading: 'Backends'}\n */\nexport function getBackend(): string {\n  return ENGINE.backendName;\n}\n\n/**\n * Removes a backend and the registered factory.\n *\n * @doc {heading: 'Backends'}\n */\nexport function removeBackend(name: string): void {\n  ENGINE.removeBackend(name);\n}\n\n/**\n * Finds the backend registered under the provided name. Returns null if the\n * name is not in the registry, or the registration hasn't finished yet.\n */\nexport function findBackend(name: string): KernelBackend {\n  return ENGINE.findBackend(name);\n}\n\n/**\n * Finds the backend factory registered under the provided name. Returns a\n * function that produces a new backend when called. Returns null if the name\n * is not in the registry.\n */\nexport function findBackendFactory(name: string): () =>\n    KernelBackend | Promise<KernelBackend> {\n  return ENGINE.findBackendFactory(name);\n}\n\n/**\n * Registers a global backend. The registration should happen when importing\n * a module file (e.g. when importing `backend_webgl.ts`), and is used for\n * modular builds (e.g. custom tfjs bundle with only webgl support).\n *\n * @param factory The backend factory function. When called, it should\n * return a backend instance, or a promise of an instance.\n * @param priority The priority of the backend (higher = more important).\n *     In case multiple backends are registered, the priority is used to find\n *     the best backend. Defaults to 1.\n * @return False if there is already a registered backend under this name, true\n *     if not.\n *\n * @doc {heading: 'Backends'}\n */\nexport function registerBackend(\n    name: string, factory: () => KernelBackend | Promise<KernelBackend>,\n    priority = 1): boolean {\n  return ENGINE.registerBackend(name, factory, priority);\n}\n\n/**\n * Gets the current backend. If no backends have been initialized, this will\n * attempt to initialize the best backend. Will throw an error if the highest\n * priority backend has async initialization, in which case you should call\n * 'await tf.ready()' before running other code.\n *\n * @doc {heading: 'Backends'}\n */\nexport function backend(): KernelBackend {\n  return ENGINE.backend;\n}\n\n/**\n * Sets the global platform.\n *\n * @param platformName The name of this platform.\n * @param platform A platform implementation.\n */\nexport function setPlatform(platformName: string, platform: Platform) {\n  env().setPlatform(platformName, platform);\n}\n"]}