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qwertyforce 2020-11-04 22:00:20 +03:00
parent 06af8b34c7
commit b4246fdf22
3 changed files with 77 additions and 3 deletions
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48
package-lock.json generated
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3
package.json
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@ -40,7 +40,8 @@
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-photo-gallery": "^8.0.0",
"sharp": "^0.26.1"
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29
server/bulk_calculate_sift_features/calculate_sift_features.ts Normal file
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@ -0,0 +1,29 @@
import * as cv from 'opencv4nodejs'
import path from 'path';
import db_ops from '../helpers/db_ops'
import config from '../../config/config'
const detector=new cv.SIFTDetector({ nFeatures: 400 })
const PATH_TO_IMAGES = path.join(config.root_path, 'public', 'images')
async function calculate_color_hist(){
const images = await db_ops.image_ops.get_all_images()
for(const image of images){
const check_if_already_calculated= await db_ops.image_search.get_sift_features_by_id(image.id)
if(check_if_already_calculated.length!==0){
continue
}
console.log(image.id)
const img = await cv.imreadAsync(`${PATH_TO_IMAGES}/${image.id}.${image.file_ext}`);
const keyPoints = await detector.detectAsync(img);
const descriptors = await detector.computeAsync(img, keyPoints);
descriptors.release()
img.release()
const descriptors_as_array=descriptors.getDataAsArray()
await db_ops.image_search.add_sift_features_by_id(image.id,descriptors_as_array)
}
}
async function run() {
await calculate_color_hist()
}
run()