Image data acquisition method and system

The invention provides an image data acquisition method and system. The image data acquisition method comprises the following steps: selecting an image data acquisition module matching a detected object to be subjected to image data acquisition; controlling the image data acquisition module to acquire image data of the detected object; and sending the acquired image data to a corresponding processing apparatus for processing, wherein selection of the image data acquisition module matching the detected object to be subjected to the image data acquisition comprises: if there is a single image data acquisition module, selecting the position of the image data acquisition module matching the detected object; and if there are multiple image data acquisition modules, selecting the quantity, the positions and the frequency division trigger modes of the image data acquisition modules matching the detected object. According to the technical scheme provided by the invention, the image data acquisition module matching the detected object in terms of properties can be selected for acquiring the image data, the properties of the detected object can be correctly reflected, and the condition that the image data acquired by the image data acquisition module does not match the properties of the detected object is effectively reduced.