1. A vision system for a vehicle, said vision system comprising: a camera having a field of view in a forward direction of travel of a vehicle equipped with said vision system; wherein said camera comprises a lens and a CMOS imaging array comprising a two-dimensional array of photosensing elements; wherein said two-dimensional array of photosensing elements comprises at least 307,200 photosensing elements arranged in a matrix array of rows and columns; wherein image data is captured by said camera as sequential frames of image data and is captured at a frame rate in the range of from 5 image frames per second to 120 image frames per second; a control comprising an image processor; wherein image data captured by said camera is processed by said image processor to determine location of objects present within a scene external the equipped vehicle within the field of view of said camera that is monitored by said camera; wherein said image processor processes image data captured by said camera to detect lane markers on a road being driven by the equipped vehicle and located within the field of view of said camera; wherein said control receives vehicle data via a communication bus of the equipped vehicle; wherein said vehicle data comprises at least (i) data indicative of speed of the equipped vehicle and (ii) data indicative of trajectory of the equipped vehicle; and wherein, responsive to processing by said image processor of image data captured by said camera, said control controls, at least in part, a pedestrian detection system of the equipped vehicle.