| 摘要 |
<p>The invention relates to a method for digitizing the surface of a material (16) travelling at a variable v high speed in front of a linear camera (10) comprising a row of sensors (22). Said method comprises the following steps: integration of the light emitted by said material (16) for travelling lengths of said material (16) which are equal to a during a determined integration time t1 when the speed at which said material (16) travels is lower than or equal to the product of the length a of the pixels (24) and the opposite of said determined integration time t1; integration of the light emitted by said material (16) for travel lengths of said material (16) equal to k.a during a variable integration time tx equal to the product of k.a. and the opposite of the speed v; proportional increase of the gain of the linear camera (10) to the travel speed v.</p> |
