Imaging systems for generating HDR images and operating methods thereof

An imaging system, comprising:

• an image sensor including a plurality of first pixels and a plurality of second pixels, the plurality of second pixels being separate from the plurality of first pixels, the image sensor configured to generate image data associated with one frame of an image based on the plurality of first pixels being controlled during a first exposure time and the plurality of second pixels being controlled during a second exposure time, the image data including first pixel values of the plurality of first pixels and second pixel values of the plurality of second pixels;
• and
• image signal processing circuitry configured to generate an HDR image based on a first Bayer image and a second Bayer image, the first Bayer image generated based on the first pixel values, the second Bayer image generated based on both the second pixel values and third pixel values of the first Bayer image,
• wherein a quantity of pixels of the first pixels is greater than a quantity of pixels of the second pixels,
• wherein the image signal processing circuitry is further configured to
• separate the first pixel values and the second pixel values to establish separated first pixel values and separated second pixel values, respectively, based on exposure time information associated with the image sensor,
• generate the first Bayer image based only on the separated first pixel values,
• generate the second Bayer image based on both the separated second pixel values and the third pixel values of the first Bayer image,
• estimate motion information of an object on the first pixel values and the second pixel values, and
• determine a weight of the third pixel values to generate the second Bayer image, based on the estimated motion information.

An operating method of an imaging system, the imaging system including an image sensor including a plurality of first pixels and a plurality of second pixels, the method comprising:

• generating image data associated with one frame of an image based on the plurality of first pixels being controlled during a first exposure time and the plurality of second pixels being controlled during a second exposure time, the image data including first pixel values of the plurality of first pixels and second pixel values of the plurality of second pixels;
• separating the first pixel values and the second pixel values to establish separated first pixel values and separated second pixel values, respectively, based on exposure time information associated with the image sensor;
• generating a first Bayer image based only on the separated first pixel values of the first pixels of the image data;
• generating a second Bayer image based on both the separated second pixel values of the second pixels of the image data and third pixel values of the first Bayer generating an HDR image based on the first Bayer image and the second Bayer image;
• and
• estimating motion information of an object on the one frame based on the image data,
• wherein a quantity of pixels of the first pixels is greater than a quantity of pixels of the second pixels,
• wherein the plurality of second pixels are separate from the plurality of first pixels,
• wherein the generating the second Bayer image includes
• determining a first weight of the second pixel values and a second weight of the third pixel values based on the estimated motion information, and
• generating pixel values of the second Bayer image based on the first weight and the second weight.