| 摘要 |
A device for increasing the dynamic range of a camera comprising a lens (2) which forms a picture (6) of a scene (1) on a primary electronic image sensor (3) having a first dynamic range, a second image data source (4) corresponding to one picture of said scene (1), and an electronic image processing circuit (5), which combines the data from the primary image sensor (3) and the data from the second image data source (4) and provides image data representing the scene (1) as observed and represented by said image data, with a ratio between the brightest and dimmest areas of said scene (1) which is greater tham the dymamic range of the primary image sensor (3). In various embodiments, the second image data source (4) is either a secondary image sensor or a memory which stores a previously sensed image from the primary image sensor (3). Said device preferably comprises a device (10) for controlling the sensitivity of the primary image sensor (3), and a transmissive, passive flat matrix screen (11) optically placed before the primary image sensor (3) to dim the brightest light rays passing therethrough. |
