| 摘要 |
<p>A test chart can be used to test sharpness performance of an imaging system's full image field by having a sharpness inspection area formed of a plurality of identical visual elements that abut each other leaving no gaps to thereby form a mosaic. Each visual element includes a plurality of groups of differently oriented contrasting lines. The mosaic may fill an entire image captured by an imager. Thus, a test system can image the chart to objectively assess the performance of the imaging system in terms of image quality (e.g. sharpness, tilt, etc) throughout the entire spatial area of the captured image. The size of the chart and spatial frequency spacing) of the visual element lines can be selected to test an imaging system's full field sharpness at selected spatial frequencies. The full field sharpness results more quickly and accurately determine different aspects of a given imaging system.</p> |
