README.md

cnn-registration

A image registration method using convolutional neural network features written in Python2, Tensorflow API r1.5.0.

Introduction

Registration of multi-temporal remote sensing images has been widely applied in military and civilian fields, such as ground target identification, urban development assessment and geographic change assessment. Ground surface change challenges feature point detection in amount and quality, which is a common dilemma faced by feature based registration algorithms. Under severe appearance variation, detected feature points may contain a large proportion of outliers, whereas inliers may be inadequate and unevenly distributed. This work presents a convolutional neural network (CNN) feature based multitemporal remote sensing image registration method with two key contributions: (i) we use a CNN to generate robust multi-scale feature descriptors; (ii) we design a gradually increasing selection of inliers to improve the robustness of feature points registration. Extensive experiments on feature matching and image registration are performed over a multi-temporal satellite image dataset and a multi-temporal unmanned aerial vehicle (UAV) image dataset. Our method outperforms four state-of-the-art methods in most scenarios.

The paper "Multi-temporal Remote Sensing Image Registration Using Deep Convolutional Features" has been published on IEEE Access. See https://ieeexplore.ieee.org/document/8404075/.

citation information:

@article{
    author={Z. Yang and T. Dan and Y. Yang}, 
    journal={IEEE Access}, 
    title={Multi-Temporal Remote Sensing Image Registration Using Deep Convolutional Features}, 
    year={2018}, 
    volume={6}, 
    pages={38544-38555}, 
    doi={10.1109/ACCESS.2018.2853100}, 
    ISSN={2169-3536}
}

Requirements

• numpy
• scipy
• opencv-python
• matplotlib
• tensorflow (with or without gpu)
• lap

To install all the requirements run

pip install -r requirements.txt

Pretrained VGG16 parameters file vgg16partial.npy is available at https://drive.google.com/file/d/1o1xjU9F58x83iR91LoFjLOlBdLN3bPnm/view?usp=sharing. Please download and put it under the src/ directory.

Usage

see src/demo.py

import Registration
from utils.utils import *
import cv2

# load images
IX = cv2.imread(IX_path)
IY = cv2.imread(IY_path)

#initialize
reg = Registration.CNN()

#register
X, Y, Z = reg.register(IX, IY)

#generate regsitered image using TPS
registered = tps_warp(Y, Z, IY, IX.shape)