A method for determining a spatial displacement vector field of a test object, in which two types of image are recorded of the test object, specifically - at least one inherent pattern image (100, 100F) recorded when the test object is illuminated with uniform illumination light, and - at least one projection pattern image (200, 200F), recorded when the test object is illuminated with a spatially modulated projection pattern projected onto said test object, wherein - a planar displacement vector field (110, 110F) of the test object is calculated from the inherent pattern image (100, 100F) at the time of recording the inherent pattern image (100, 100F) as a representation of the test object assigned to the inherent pattern image (100, 100F) by comparing the inherent pattern image (100, 100F) with an inherent pattern image taken at a reference time (tR) of the test object, and - a shape (210, 210F) of the test object at the time when the projection pattern image (200, 200F) was recorded is calculated from the projection pattern image (200, 200F) as the representation of the test object assigned to the projection pattern image (200, 200F) and wherein the spatial displacement vector field is determined from the representations of the test object which are assigned to the recorded images (100, 100F, 200, 200F), characterised in that - at a test time (t T), an image (100; 200) of a first of the two types of image, and at two recording times (t T -; t T +) temporally spaced before and after the test time (t T), in each case one image (100F; 200F) of the second of the two types of image is recorded, - from the calculated representations of the test object assigned to the images (100F; 200F) of the second type of image, the corresponding representation of the test object at the test time (t T) is estimated by averaging, and - the determination of the spatial displacement vector field is based on the calculated representation of the test object which is assigned to the image (100, 200) of the first type of image, as well as on the representation of the test object estimated from the images (100F; 200F) of the second type of image. - at least one inherent pattern image (100, 100F) recorded when the test object is illuminated with uniform illumination light, and - at least one projection pattern image (200, 200F), recorded when the test object is illuminated with a spatially modulated projection pattern projected onto said test object, wherein - a planar displacement vector field (110, 110F) of the test object is calculated from the inherent pattern image (100, 100F) at the time of recording the inherent pattern image (100, 100F) as a representation of the test object assigned to the inherent pattern image (100, 100F) by comparing the inherent pattern image (100, 100F) with an inherent pattern image taken at a reference time (tR) of the test object, and - a shape (210, 210F) of the test object at the time when the projection pattern image (200, 200F) was recorded is calculated from the projection pattern image (200, 200F) as the representation of the test object assigned to the projection pattern image (200, 200F) - at a test time (t T), an image (100; 200) of a first of the two types of image, and at two recording times (t T -; t T +) temporally spaced before and after the test time (t T), in each case one image (100F; 200F) of the second of the two types of image is recorded, - from the calculated representations of the test object assigned to the images (100F; 200F) of the second type of image, the corresponding representation of the test object at the test time (t T) is estimated by averaging, and - the determination of the spatial displacement vector field is based on the calculated representation of the test object which is assigned to the image (100, 200) of the first type of image, as well as on the representation of the test object estimated from the images (100F; 200F) of the second type of image.