Projection system and method of driving a projection system

A projection system, comprising:

• a light source configured to emit a light in response to an image data;
• a phase light modulator configured to receive the light from the light source and to apply a spatially-varying phase modulation on the light to generate an output image;
• and
• a controller configured to:
• determine, for a frame of the image data, a plurality of phase configurations, respective ones of the plurality of phase configurations corresponding to solutions of iterations of a phase algorithm and representing the same image with a different modulation pattern, and
• provide a phase control signal to the phase light modulator, the phase control signal configured to cause the phase light modulator to modulate light in accordance with the plurality of phase configurations in a time-divisional manner within a time period of the frame, thereby causing the projection system to project a series of subframes within the time period to form the output image on a screen, wherein the phase algorithm is based on a compensation map for modifying a target intensity of the image data or on a scaling transformation for modifying an effective resolution of the image data.