Method and imaging system for generating a gray-scale image

A method for generating a gray-scale image using an imaging system, the imaging system comprising an illumination element configured to emit light and an imaging sensor comprising at least one photo-sensitive element, each photo-sensitive element comprising a first element with a modifiable first charge level and a second element with a modifiable second charge level, the method comprising:

• during a first phase, controlling the illumination element to emit light towards a scene and driving the at least one photo-sensitive element such that charge carriers generated in the at least one photo-sensitive element by light received from the scene modify the first charge level;
• during a second phase, controlling the illumination element to pause emission of the light and driving the at least one photo-sensitive element such that charge carriers generated in the at least one photo-sensitive element by light received modify the second charge level;
• and
• generating the gray-scale image of the scene based on the first charge level and the second charge level,
• wherein the light emitted by the illumination element during the first phase comprises a plurality of light pulses,
• wherein a time interval between a start of a first light pulse being emitted in the first phase and an end of a last light pulse being emitted during the first phase covers at least 95% of the first phase.

A method for generating a gray-scale image using an imaging system, the imaging system comprising an illumination element configured to emit light and an imaging sensor comprising at least one photo-sensitive element, each photo-sensitive element comprising a first element with a modifiable first charge level and a second element with a modifiable second charge level, the method comprising:

• during a first phase, controlling the illumination element to emit light towards a scene and driving the at least one photo-sensitive element such that charge carriers generated in the at least one photo-sensitive element by light received from the scene modify the first charge level;
• during a second phase, controlling the illumination element to pause emission of the light and driving the at least one photo-sensitive element such that charge carriers generated in the at least one photo-sensitive element by light received modify the second charge level;
• and
• generating the gray-scale image of the scene based on the first charge level and the second charge level,
• wherein the light emitted by the illumination element during the first phase is emitted as a single light pulse,
• wherein a time interval between a start of a first light pulse being emitted in the first phase and an end of a last light pulse being emitted during the first phase covers at least 95% of the first phase.