1. Introduction  
2. Analytical Methods of Phase Contrast Microscopy Cell Population Segmentation  
2.1. Contour-based Methods  
2.2. Machine Learning Based Methods  
2.3. Restoration Based Methods  
2.4. Discussion  
3. Database and Performance Evaluation  
3.1. Phase Contrast Microscopy Cell Image Datasets  
3.2. Performance Evaluation  
4. Conclusion