face-api/build/tinyYolov2/extractParamsFromWeigthMap.js

import { disposeUnusedWeightTensors } from '../common/disposeUnusedWeightTensors';
import { loadSeparableConvParamsFactory } from '../common/extractSeparableConvParamsFactory';
import { extractWeightEntryFactory } from '../common/extractWeightEntryFactory';
function extractorsFactory(weightMap, paramMappings) {
    const extractWeightEntry = extractWeightEntryFactory(weightMap, paramMappings);
    function extractBatchNormParams(prefix) {
        const sub = extractWeightEntry(`${prefix}/sub`, 1);
        const truediv = extractWeightEntry(`${prefix}/truediv`, 1);
        return { sub, truediv };
    }
    function extractConvParams(prefix) {
        const filters = extractWeightEntry(`${prefix}/filters`, 4);
        const bias = extractWeightEntry(`${prefix}/bias`, 1);
        return { filters, bias };
    }
    function extractConvWithBatchNormParams(prefix) {
        const conv = extractConvParams(`${prefix}/conv`);
        const bn = extractBatchNormParams(`${prefix}/bn`);
        return { conv, bn };
    }
    const extractSeparableConvParams = loadSeparableConvParamsFactory(extractWeightEntry);
    return {
        extractConvParams,
        extractConvWithBatchNormParams,
        extractSeparableConvParams
    };
}
export function extractParamsFromWeigthMap(weightMap, config) {
    const paramMappings = [];
    const { extractConvParams, extractConvWithBatchNormParams, extractSeparableConvParams } = extractorsFactory(weightMap, paramMappings);
    let params;
    if (config.withSeparableConvs) {
        const numFilters = (config.filterSizes && config.filterSizes.length || 9);
        params = {
            conv0: config.isFirstLayerConv2d ? extractConvParams('conv0') : extractSeparableConvParams('conv0'),
            conv1: extractSeparableConvParams('conv1'),
            conv2: extractSeparableConvParams('conv2'),
            conv3: extractSeparableConvParams('conv3'),
            conv4: extractSeparableConvParams('conv4'),
            conv5: extractSeparableConvParams('conv5'),
            conv6: numFilters > 7 ? extractSeparableConvParams('conv6') : undefined,
            conv7: numFilters > 8 ? extractSeparableConvParams('conv7') : undefined,
            conv8: extractConvParams('conv8')
        };
    }
    else {
        params = {
            conv0: extractConvWithBatchNormParams('conv0'),
            conv1: extractConvWithBatchNormParams('conv1'),
            conv2: extractConvWithBatchNormParams('conv2'),
            conv3: extractConvWithBatchNormParams('conv3'),
            conv4: extractConvWithBatchNormParams('conv4'),
            conv5: extractConvWithBatchNormParams('conv5'),
            conv6: extractConvWithBatchNormParams('conv6'),
            conv7: extractConvWithBatchNormParams('conv7'),
            conv8: extractConvParams('conv8')
        };
    }
    disposeUnusedWeightTensors(weightMap, paramMappings);
    return { params, paramMappings };
}
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