Real-time Capillary-level Microchannel Flow Analysis Using a Full-pixel Frame-straddling Micro-PIV System

摘要: We develop a high throughput microscopic particle image velocimetry system that can compute flow vectors of 512 × pixels in real time at 500 fps for fast microchannel flow. To many speed, gradient-based optical method is accelerated by calculating integral images product sums brightness gradients and implementing them as parallel processes on GPU-based frame-straddling high-frame-rate (HFR) vision system. Thus, the HFR system, having two cameras with delay function, simultaneously hundreds millions second, assuming small displacement between frames submillisecond delay. conducted real-time measurement experiments to quantify capillary-level microfluidic chip 7-μm-width channels, verified performance our long-term blood analysis.