There are too many conferences in the world. I recommend you to read papers from following conferences, which are famous among researchers on each field and enlisted as top conferences :
Robotics
- ICRA : IEEE International Conference on Robotics and Automation
- IROS : IEEE/RSJ International Conference on Intelligent Robots and Systems
- RSS : Robotics: Science and Systems Conference
- ECMR : European Conference on Mobile Robots
Computer Vision
- CVPR : IEEE Computer Vision and Pattern Recognition
- ICCV : IEEE International Conference on Computer Vision
- ECCV : European Conference on Computer Vision
- ICPR : International Conference on Pattern Recognition
- BMVC : British Machine Vision Conference
Machine Learning
- ICML : International Conference on Machine Learning
- NIPS : Neural Information Processing Systems