Real time Depth Map acquisitions in high resolution is a true challenge. Applications are related to 3D images acquisitions, green screen replacement,robotics and high resolution kinect. We propose 2 technologies: * TOF (Time Of Flight) using high resolution sensor and modulated IR lighting. Maximum depth measurement is about 10 m.  * Special optics and high resolution sensor. No light projection is needed but very fast parallel processing in FPGA (Field Programmable Gate Array) is necessary. Maximum depth measurement is quite high.