2012-07-31 Log

The proceedings of Computer Vision and Pattern Recognition (CVPR) 2012 is available in the IEEE Digital Library. The papers in the CVPR Workshops (CVPRW) 2012 are also available in the digital library.

Temporally Aliased Video Microscopy: An Undersampling Method for In-Plane Modal Analysis of Microelectromechanical Systems, in the Jounral of Microelectromechanical Systems Aug. 2012. The experiments show that using a camera of 28Hz and a a high-frequency strobe lighting, a vibration frequency of a few kilohertz can be extracted.

Off topic:
Why Aren’t You Delegating?, a blog post in Harvard Business Review. The comments of the post are also inspiring.

2012-07-30 Log

Sampling and controlling faster than the computational delay, in IET Control Theory & Applications (IET-CTA) Aug. 2012. It proposes methods to design and implement intra-delay sampling controllers.

PID Control in the Third Millennium – Lessons Learned and New Approaches, by Ramon Vilanova and Antonio Visioli, a book published in 2012 in the ADVANCES IN INDUSTRIAL CONTROL series of Springer.

2012-07-26 Log

Theory anxiety, a blog post by Dr Inger Mewburn. Two interesting papers are mentioned in the post. I found another paper in the same issue of the journal also interesting.

Photometric Visual Servoing, in IEEE Transactions on Robotics Aug. 2011. The methods uses the luminance intensity of the image instead of geometrical features. The Phong illumination model is used to related the luminance intensity to the camera velocity.

PID control system analysis, design, and technology, in Transactions on Control Systems and Technology 2005. It is not trivial to tune a PID controller in practice.

2012-07-25 Log

Two recent books on motors and control:

Some recent works on exposure control:

Cloud-based Networked Visual Servo Control, to appear in IEEE Transactions on Industrial Electronics.

2012-07-23 Log

Following an article on Embedded Vision Alliance, I read a white paper (Leveraging multicore processors for machine vision applications) in the Embedded and Machine Vision page of Texas Instrument (TI). I wonder why TI chooses the less powerful dual-core TMS320C6657 (Evaluation Modules: TMDSEVM6657), instead of the more powerful octo-core TMS320C6678 (Evaluation Modules: TMDSEVM6678), as the target device for machine vision.

2012-07-18 Log

Too Much Automation?, in IEEE Design & Test of Computers July 2012. The author reviews two books and relates them to the EDA industry. The two books reviewed are:

IEEE Transactions on Instrumentation and Measurement (TIM) Aug. 2012 has a Special section on measurement fundamentals. There are some interesting papers:

A Real-Time Visual Inspection System for Discrete Surface Defects of Rail Heads, in TIM Aug. 2012.

Proceedings of a few recent conferences are in the digital library now:

Modeling the Performance of Image Restoration From Motion Blur, in Transactions on Image Processing (TIP) Aug. 2012.

System Identification – An Introduction, a recent book by Karel Keesman with Wageningen University.

Arrow Electronics provides a VITA Reference Kits with CMOS image sensors from ON Semiconductor. These image sensors are capable of setting region-of-interest (ROI) for high-speed imaging above 1000 fps. The kit contains an Altera FPGA together with reference design. At the price of about 400 Euro (VITA2000 version), the reference kit is likely the cheapest FPGA platform to develop high-speed image processing on the market.