| 摘要 |
The invention relates to an image processing method and to an arrangement for implementing the method. The object of the invention is to achieve a reduction in spatio-temporal column/row noise over an IR detector and thereby eliminate the perception of stripiness in the image. The object is achieved by a method comprising the following steps: a. filtration of the original image by means of a low-pass filter for forming a low-pass filtered image, b. creation of a high-pass filtered image by subtracting the low-pass filtered image from the original image, c. formation of intermediate values from the created high-pass filtered image, based on column-wise selection of pixel values in the suppression of column noise, and row-wise selection of pixel values in the suppression of row noise, d. subtraction of formed intermediate values, column- by-column and row-by-row, from the original image, and by an arrangement for implementing the method, comprising a non-linear, one-dimensional digital FIR filter (Finite Impulse Response filter), a computing unit for column-wise or row-wise formation of intermediate values, an image storage unit and a subtraction unit. |
