CPC G06T 5/002 (2013.01) [G06T 5/009 (2013.01); G06T 5/20 (2013.01); G06T 5/50 (2013.01); H04N 5/265 (2013.01); H04N 23/741 (2023.01); G06T 2207/20208 (2013.01); G06T 2207/30168 (2013.01)] | 14 Claims |
1. A noise removing circuit, comprising:
an image combiner suitable for generating a high dynamic range (HDR) image by combining images having different exposure times;
a detailed image generator suitable for generating a detailed image from the HDR image;
an image strength evaluator suitable for evaluating strength of the detailed image; and
a noise coring component suitable for performing a noise coring operation for removing noise from a region of the detailed image in which a signal to noise ratio (SNR) has decreased using a low threshold and a saturation threshold when the strength of the detailed image is less than a reference value,
wherein the noise coring component adjusts a noise coring strength using a coring width parameter in a first region in which a long exposure image and a middle exposure image overlap and a second region in which the middle exposure image and a short exposure image overlap.
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