gender_age_estimation_mxnet

[IJCAI18] SSR-Net: A Compact Soft Stagewise Regression Network for Age Estimation

A real-time age estimation model with 170KB.
Gender regression is included
Megaage-Asian age regression is included

This is a mxnet version implementation of SSR-Net for age and gender Estimation,Keras version in here https://github.com/shamangary/SSR-Net ,but we get better accuracy.

Real-time webcam demo

Paper

PDF

https://github.com/wayen820/gender_age_estimation_mxnet/blob/master/ssr.pdf

Paper authors

Tsun-Yi Yang, Yi-Husan Huang, Yen-Yu Lin, Pi-Cheng Hsiu, and Yung-Yu Chuang

Abstract

This paper presents a novel CNN model called Soft Stagewise Regression Network (SSR-Net) for age estimation from a single image with a compact model size. Inspired by DEX, we address age estimation by performing multi-class classification and then turning classification results into regression by calculating the expected values. SSR-Net takes a coarse-to-fine strategy and performs multi-class classification with multiple stages. Each stage is only responsible for refining the decision of the previous stage. Thus, each stage performs a task with few classes and requires few neurons, greatly reducing the model size. For addressing the quantization issue introduced by grouping ages into classes, SSR-Net assigns a dynamic range to each age class by allowing it to be shifted and scaled according to the input face image. Both the multi-stage strategy and the dynamic range are incorporated into the formulation of soft stagewise regression. A novel network architecture is proposed for carrying out soft stagewise regression. The resultant SSR-Net model is very compact and takes only 0.32 MB. Despite of its compact size, SSR-Net’s performance approaches those of the state-of-the-art methods whose model sizes are more than 1500x larger.

Accuracy Comparisions

Platform

Python3
Mxnet
GTX-1080Ti
Ubuntu

Codes

There are three different section of this project.

Data pre-processing
Training
Model modification and Test

We will go through the details in the following sections.

1. Data pre-processing

You can download rec format file directly in here: https://share.weiyun.com/5rQwJtA ,or package it youself according to the following steps
Download IMDB-WIKI dataset (face only) from https://data.vision.ee.ethz.ch/cvl/rrothe/imdb-wiki/.
Download Megaage dataset from http://mmlab.ie.cuhk.edu.hk/projects/MegaAge/
Unzip them under '~/data' or others path
Run the following codes for dataset pre-processing.

cd ./src/data
python3 ./process_data_wiki_imdb.py --rootpath ~/data/imdb_crop --outputpath ../../datasets/imdb
python3 ./process_data_wiki_imdb.py --rootpath ~/data/wiki_crop --outputpath ../../datasets/wiki
python3 ./process_data_mege_asia.py --rootpath ~/data/megaage/megaage_asian/train --agefile ~/data/megaage/megaage_asian/list/train_age.txt --namefile ~/data/megaage/megaage_asian/list/train_name.txt --saveprefix ../../datasets/megaage/train
python3 ./process_data_mege_asia.py --rootpath ~/data/megaage/megaage_asian/test --agefile ~/data/megaage/megaage_asian/list/test_age.txt --namefile ~/data/megaage/megaage_asian/list/test_name.txt --saveprefix ../../datasets/megaage/test

2. Training

For Age Train,first train on imdb ,then fine tune on wiki and megaage-asia

cd ./src
./train_ssr_adam.sh

For gender Train,train on imdb directly

cd ./src
./train_ssr_adam_gender.sh

3. Model modification and Test

Some inference frameworks like ncnn do not support arange ops,but we need stage_num parameter,so we use them as input. if you do not want deploy,you don't need do this. model modification please reference ./src/deploy/model_slim_gender.py and ./src/deploy/model_slim_age.py.I have provided pre-trained model in models directory,you can use it directly.

Test from web camera:

cd ./src/deploy/
python3 ./test.py

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