Abstract: This camera unit (14) comprises a high-resolution rolling shutter camera (16) and one or several low-resolution global shutter cameras (18), for example monochromic spectral cameras. All the cameras are oriented in the same direction and are able to be triggered together to collect simultaneously a high-resolution image (I0) and at least one low-resolution image (I1-I4) of a same scene viewed by the drone. Image processing means (22) determine the distortions of the wobble type present in the high-resolution image and absent from the low-resolution images, and combine the high-resolution image (I0) and the low-resolution images (I1-I4) to deliver as an output a high-resolution image (I?0) corrected for these distortions.

Abstract: The imaging assembly includes: a multi-band sensor (5), comprising a plurality of light sensors (7) each for measuring a light intensity returned by a target (8) in a predetermined frequency band; a sunlight detector (9), comprising a plurality of control sensors (11) each for measuring an ambient light intensity in one of the predetermined bands of frequencies of the multi-band sensor (5) each associated with a band-pass filtre; an electronic module (13) configured so as to calculate at least one characteristic variable value of the light intensity returned by the target (8) in each predetermined frequency band; the sunlight detector (9) comprising a box casing (21), the control sensors (11) being attached to the box casing (21), the band-pass filtres (17) being attached to the box casing (21) each one so as to be facing the photosensitive surface of the associated control sensor.

Abstract: The apparatus comprises a camera (10) with a digital sensor read by a mechanism of the rolling shutter type delivering video data (Scam) line by line. An exposure control circuit (22) adjusts dynamically the exposure time (texp) as a function of the level of illumination of the scene that is captured. A gyrometer unit (12) delivers a gyrometer signal (Sgyro) representative of the instantaneous variations of attitude (?, ?, ?) of the camera, and a processing circuit (18) that receives the video data (Scam) and the gyrometer signal (Sgyro) delivers as an output video data processed and corrected for artefacts introduced by vibrations specific to the apparatus. An anti-wobble filter (24) dynamically modifies the gain of the gyrometer signal as a function of the exposure time (texp), so as to reduce the gain of the filter when the exposure time increases, and vice versa.

Abstract: The invention relates to a method of dynamically determining the duration of exposure for the capture of an image implemented in a drone comprising a substantially vertical-view camera. The method comprises a step (21) of measuring of the horizontal speed of displacement of the drone, a step (22) of measuring the distance between said drone and the ground, and a step (23) of determining the duration of exposure based on the measured speed of displacement of the drone, the distance measured between said drone and the ground, a predetermined quantity of blurring and the focal length of said camera.

Abstract: This camera unit (14) comprises a high-resolution rolling shutter camera (16) and one or several low-resolution global shutter cameras (18), for example monochromic spectral cameras. All the cameras are oriented in the same direction and are able to be triggered together to collect simultaneously a high-resolution image (I0) and at least one low-resolution image (I1-I4) of a same scene viewed by the drone. Image processing means (22) determine the distortions of the wobble type present in the high-resolution image and absent from the low-resolution images, and combine the high-resolution image (I0) and the low-resolution images (I1-I4) to deliver as an output a high-resolution image (I0) corrected for these distortions.

Abstract: The invention relates to a camera unit (14) adapted to be placed on board a drone (10) to map a land (16), comprising a camera (18) adapted to capture successive images of portions of the land overflown by the drone. The camera unit comprises means for memorizing the captured images, means for comparing information about the overflown land portion visible through the camera with at least one piece of information about at least the previous captured image to determine the rate of overlapping of the overflown land portion with at least said previous captured image, and means for sending a command to the camera to carry out the capture of an image, as soon as the rate of overlapping of the overflown land portion is lower than or equal to the predetermined rate of overlapping.

Abstract: The apparatus comprises a camera (10) with a digital sensor read by a mechanism of the rolling shutter type delivering video data (Scam) line by line. An exposure control circuit (22) adjusts dynamically the exposure time (texp) as a function of the level of illumination of the scene that is captured. A gyrometer unit (12) delivers a gyrometer signal (Sgyro) representative of the instantaneous variations of attitude (?, ?, ?) of the camera, and a processing circuit (18) that receives the video data (Scam) and the gyrometer signal (Sgyro) delivers as an output video data processed and corrected for artefacts introduced by vibrations specific to the apparatus. An anti-wobble filter (24) dynamically modifies the gain of the gyrometer signal as a function of the exposure time (texp), so as to reduce the gain of the filter when the exposure time increases, and vice versa.