초록 ▼

An automatic ranging device for optical instruments focuses two images of at least a portion of the field of view of the instrument on an array of photosensitive cells. The electronic output of the individual cells is related to the intensity of the light impinging thereon. The electronic output cor

An automatic ranging device for optical instruments focuses two images of at least a portion of the field of view of the instrument on an array of photosensitive cells. The electronic output of the individual cells is related to the intensity of the light impinging thereon. The electronic output corresponding to the first image is compared with the electronic output corresponding to the second image. The relative location of corresponding portions of the first and second images is a measure of the range to the object which is imaged. Electronic circuitry determines the location at which image coincidence occurs and controls the focus of the optical instrument accordingly.

대표청구항 ▼

An automatic range determination system comprising: image sensing means for sensing an image focused thereon; optical means for focusing first and second images of an object the range of which is to be determined onto said image sensing means, said first and second images derived along different sig

An automatic range determination system comprising: image sensing means for sensing an image focused thereon; optical means for focusing first and second images of an object the range of which is to be determined onto said image sensing means, said first and second images derived along different sightlines; quantization means for quantizing the data generated for each image element by said image sensing means; storage means for receiving and storing the quantized image data corresponding to said first and second images; comparison means for comparing on an element by element basis the stored quantized image data corresponding to said first image to the stored quantized image data corresponding to said second image and providing an output which is representative of the degree of similarity between the stored quantized image data for corresponding elements of the first and second images; control means for controlling operations performed during range determination sequences and for causing the comparator means to compare during a range determination sequence the stored data with respect to M successive elements of the first image in separate comparison sequences with the stored data for a plurality of different sets of M successive elements of said second image; alignment storage means for storing the relative alignment between the elements of the first image and the elements of the second image which yields an optimum comparison between the stored data; comparison optimization means for recognizing the alignment between the elements of said first image and said second image which, for the optimization criterion utilized, yields an optimum comparison between the elements of the first image and the elements of the second image.