| 摘要 |
A portable, self contained, deployable test pattern display, for use in optimising imaging quality having a portable protective display housing , a test pattern incorporating imaging information contained in and deployable from the housing, a retraction device connected to the test pattern for replacing it within the housing, so that the test pattern can be carried to a desired location , protected by the housing, and the test pattern can be deployed from the housing when required, and can then be replaced within the housing. Also disclosed is a method of optimising image quality, of a scene image recorded at a location by compari ng the values of a test pattern image taken at the location , with predetermined values of the test pattern, by, recording a scene image, recording an image of a test pattern comparing values of the test pattern image , with predetermined values of th e test pattern, adjusting values of the test pattern image to the predetermined values, and adjusting the values of the scene image to match the adjustments made to the test pattern image .
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