Performance of passive ranging from image flow

  title={Performance of passive ranging from image flow},
  author={Juan Lopez and Matthew Markel and Naveed Siddiqi and Glenn Gebert},
The accuracy of passive ranging derived from image flow is investigated for potential use in air vehicles. By using the optical flow constraint, a closed form expression for range at each pixel is obtained directly from spatial-temporal gradientsofthe image intensity. the pixel location, and the known egomotion. Gradient estimation is performed with a spaceltimc, Sobel mask, and a local median filter is employed for rejection of outliers due to algorithm singularities. The filtered range image… CONTINUE READING