Method, performed by one or more devices (900; 301; 330; 300), for determining information regarding an intensity peak position in a space-time volume (360; 361) formed by image frames generated by an image sensor from sensing of light reflected from a measure object as part of light triangulation, wherein said light triangulation is based on movement of at least a light source and/or the measure object in relation to each other so that at different consecutive time instants, different consecutive portions of the measure object are illuminated by the light source and reflected light from the measure object is sensed by the image sensor whereby each image frame of the space time volume (360 361) is associated both with a respective such time instant and with a respective portion of the measure object from which the image sensor sensed light at the respective time instant, wherein said space-time volume (360; 361) is further associated with space-time trajectories relating to how feature points of the measure object map to positions in the space-time volume (360; 361), wherein the method comprises: - obtaining a first hypothetical intensity peak position (551a; 651a) in said space time volume (360; 361), - computing a first space time analysis position (552a; 652a) based on space-time analysis performed locally around the first hypothetical intensity peak position (551a; 651a) and along a first space time trajectory that is a space time trajectory of said space time trajectories that is associated with the first hypothetical intensity peak position (551a, 651a), and - determining said information regarding the intensity peak position based on the first hypothetical intensity peak position (551a; 651a) and the computed first space time analysis position (552a; 652a), characterized in that said determination of the information regarding the intensity peak position comprises: - computing a first position difference (553a; 653a) in the space-time volume between the first hypothetical intensity peak position (551a, 651a) and the computed first space time analysis position (552a; 652a), and - if the computed first position difference (553a; 653a) is below a certain threshold value, providing the first hypothetical intensity peak position (551a, 651a) as a determined intensity peak position. - obtaining a first hypothetical intensity peak position (551a; 651a) in said space time volume (360; 361), - computing a first space time analysis position (552a; 652a) based on space-time analysis performed locally around the first hypothetical intensity peak position (551a; 651a) and along a first space time trajectory that is a space time trajectory of said space time trajectories that is associated with the first hypothetical intensity peak position (551a, 651a), and - determining said information regarding the intensity peak position based on the first hypothetical intensity peak position (551a; 651a) and the computed first space time analysis position (552a; 652a), - computing a first position difference (553a; 653a) in the space-time volume between the first hypothetical intensity peak position (551a, 651a) and the computed first space time analysis position (552a; 652a), and - if the computed first position difference (553a; 653a) is below a certain threshold value, providing the first hypothetical intensity peak position (551a, 651a) as a determined intensity peak position.