Methods and systems for reconstructing a high frame rate high resolution video

A controlling method of an image device, comprising:

• capturing a plurality of parity fields in a Bayer domain from an image sensor of the image device;
• and
• generating a video by reconstructing the plurality of parity fields by using one of a pre-Image Signal Processor (ISP) Flexible Sub-sampled Readout (FSR) reconstruction and a post-ISP FSR reconstruction based on bandwidth capacity of an ISP of the image device,
• wherein the generating further comprises:
• reconstructing the plurality of parity fields by using the pre-ISP FSR reconstruction in response to bandwidth of the ISP of the image device being unable to process the plurality of parity fields which have a frame rate that is scaled up by a scaling factor,
• detecting a user event for recording full frame Bayer data corresponding to a video captured by the image sensor,
• fetching, from a circular memory, a first parity field set corresponding to a plurality of parity fields stored in a time unit which is predetermined before the user event and a second parity field set corresponding to a plurality of parity fields stored in a time unit which is predetermined after the user event,
• reconstructing full frame Bayer data by using the first parity field set and the second parity field set,
• resizing the full frame Bayer data reconstructed in ISP bandwidth, and
• generating full frame YUV data by processing the resized full frame Bayer data.