Sensor for Distance Measurement Using Pixel Grey-Level Information

Sensor for Distance Measurement Using Pixel Grey-Level Information

An alternative method for distance measurement is presented, based on a radiometric approach to the image formation process. The proposed methodology uses images from an infrared emitting diode (IRED) to estimate the distance between the camera and the IRED. Camera output grey-level intensities are a function of the accumulated image irradiance, which is also related by inverse distance square ...

Using Grey-Level and Distance Information for Medial Surface Representation of Volume Images

A medial surface representation of a grey-level volume image is computed. The foreground is reduced to a subset topologically equivalent to the initial foreground and mainly consisting of surfaces centred within regions having locally higher intensities, here, regarded as more informative. This result is obtained by combining distance information with grey-level information. A surface skeleton ...

Computerized Kymograph for Muscle Contraction Measurement Using Ultrasonic Distance Sensor

Kymograph is a device to record the magnitude of physiological variables, such as: muscle contraction. However, we observe some lacks of the conventional kymographs, such as: result’s visualisation and accuracy. Hence, we propose a computerized-kymograph which can automatically measure, record, and display graphical data of muscle contraction on the computer by using ultrasonic distance sensor....

Recognising Human Faces Using Shape and Grey - Level Information

Building and using flexible models incorporating grey-level information

This papa describes a technique for building compact models of the shape and appearance ofpuibre fiom the siatidcs of sets o labelled ima s of shape t&e, describing how m ant putts of the ob&ct can vary, and a s t a t i s t i c a e l of the exleveh in regions around each d e i Petted point. Suc 7 d e b have oved usefil in a wide variety o f e c a t i m . we L c & h ~ w the d e i s can be used u...