A method for representing a safety-relevant state by means of a display, comprising: creating an image data stream by a processor taking into account a status information, wherein the image data stream contains representation values, in particular color values; forwarding the image data stream to the display for representing an image by driving pixels on the basis of the representation values; and supplying of the image data stream to a test unit for performing a computational safety test of a monitoring region, which comprises a contiguous set with a plurality of individual pixels of an image to be represented; CHARACTERIZED IN THAT a reference value valid for all pixels of said monitoring region is determined and the test unit stores this reference value; said test unit in a test sequence computationally determines a result variable starting from the image data stream and for this purpose, successively and respectively for each pixel of a selection of pixels of the monitoring region, wherein said selection comprises at least every second pixel of the monitoring region to be tested, - performs a comparison operation between at least one representation value of the respective pixel and said stored reference value to form a comparison result; and - in order to determine said result variable, the respective comparison result for each pixel of the selection is taken into account, in particular by incrementally increasing or decreasing said result variable; and, after said test sequence has been carried out, comparing said result variable, which the test unit has computationally determined as a function of the comparison results, with a threshold value, preferably by means of said test unit, so as to form either a positive or negative result of the safety test, wherein said threshold value for said result variable is determined such that a positive result of the safety test is ascertained when a predetermined proportion of said selection of pixels satisfies the comparison criterion and this proportion is less than 100%. creating an image data stream by a processor taking into account a status information, wherein the image data stream contains representation values, in particular color values; forwarding the image data stream to the display for representing an image by driving pixels on the basis of the representation values; and supplying of the image data stream to a test unit for performing a computational safety test of a monitoring region, which comprises a contiguous set with a plurality of individual pixels of an image to be represented; CHARACTERIZED IN THAT a reference value valid for all pixels of said monitoring region is determined and the test unit stores this reference value; said test unit in a test sequence computationally determines a result variable starting from the image data stream and for this purpose, successively and respectively for each pixel of a selection of pixels of the monitoring region, wherein said selection comprises at least every second pixel of the monitoring region to be tested, - performs a comparison operation between at least one representation value of the respective pixel and said stored reference value to form a comparison result; and - in order to determine said result variable, the respective comparison result for each pixel of the selection is taken into account, in particular by incrementally increasing or decreasing said result variable; - performs a comparison operation between at least one representation value of the respective pixel and said stored reference value to form a comparison result; and - in order to determine said result variable, the respective comparison result for each pixel of the selection is taken into account, in particular by incrementally increasing or decreasing said result variable; and, after said test sequence has been carried out, comparing said result variable, which the test unit has computationally determined as a function of the comparison results, with a threshold value, preferably by means of said test unit, so as to form either a positive or negative result of the safety test, wherein said threshold value for said result variable is determined such that a positive result of the safety test is ascertained when a predetermined proportion of said selection of pixels satisfies the comparison criterion and this proportion is less than 100%.