System, method, and computer program for capturing a flash image based on ambient and flash metering

An apparatus, comprising:

• a non-transitory memory storing instructions;
• and
• one or more processors in communication with the non-transitory memory, wherein the one or more processors execute the instructions to:
• meter a first flash condition, using a camera module, for a first flash frame, wherein meter the first flash condition includes a pre-metering capture;
• determine a first flash capture time based on the metering of the first flash condition;
• in response to determining the first flash capture time, meter a first ambient condition, using the camera module, for a first ambient frame;
• determine a first ambient capture time based on the metering of the first ambient condition;
• capture a first image based on the first flash capture time and the first ambient capture time.

A method, comprising:

• metering a first ambient condition, using a camera module, for a first ambient frame;
• determining a first ambient capture time based on the metering of the first ambient condition;
• metering a first flash condition, using the camera module, for a first flash frame, wherein metering the first flash condition includes a pre-metering capture;
• determining a first flash capture time based on the metering of the first flash condition;
• capturing, using a rolling shutter image sensor within the camera module, the first ambient frame based on the first ambient capture time;
• after capturing the first ambient frame, enabling a flash circuit during an active period;
• capturing, using the rolling shutter image sensor, the first flash frame based on a combination of the first ambient capture time and the first flash capture time;
• and
• generating a final image based on the first ambient frame and the first flash frame.