Apparatuses and methods for measurement of spatial properties of a moving surface coating containing flake pigment are provided herein. An exemplary apparatus includes a movable surface adapted to receive the surface coating. A motion device is in mechanical communication with the movable surface. A light source provides a beam of light directed at a preselected interrogation zone through which the movable surface passes during movement thereof. A light detection device detects light reflected from the preselected interrogation zone and produces an output. A computing device is configured to determine one or more spatial properties of the surface coating based upon the output. One or more of the light source, the light detection device, or the computing device are configured to adjust for the movement of the surface coating through the preselected interrogation zone as a variable that affects measurement of reflected light by the light detection device.

Apparatuses and methods for measurement of spatial properties of a moving surface coating containing flake pigment are provided herein. An exemplary apparatus includes a movable surface adapted to receive the surface coating. A motion device is in mechanical communication with the movable surface. A light source provides a beam of light directed at a preselected interrogation zone through which the movable surface passes during movement thereof. A light detection device detects light reflected from the preselected interrogation zone and produces an output. A computing device is configured to determine one or more spatial properties of the surface coating based upon the output. One or more of the light source, the light detection device, or the computing device are configured to adjust for the movement of the surface coating through the preselected interrogation zone as a variable that affects measurement of reflected light by the light detection device.

An apparatus for examining surface properties of lacquered surfaces, in particular of motor vehicles, having a first illumination device which illuminates a surface to be examined at a first illumination angle, having a second illumination device which illuminates the surface at a second illumination angle, having a first sensor device which records radiation reflected and/or scattered by the surface illuminated by the second illumination device at a first recording angle and outputs at least one value which is characteristic of the radiation reaching the sensor device from the surface, wherein the apparatus has a radiation analysis device which analyses radiation scattered and/or reflected by the surface with regard to its wavelength.

A method for determining a target analyte level comprising: obtaining test data of a test region of a lateral flow device, test data comprising test data values of a light parameter of light reflected from test region; dividing test data into test data sub-groups; obtaining light control data of a light control region, light control data comprising light data values of the light parameter from the light control region; dividing light control data into light control data sub-groups, each light control data sub-group having a corresponding test data sub-group; for at least some of the test data sub-groups, comparing test data values of a given test data sub-group with light data values of the corresponding light control data sub-group, and correcting, if any variations are determined, test data values; and comparing corrected test data with predetermined correlation data correlating light data values with different target analyte levels.