# US 2014/0152861 A1 · Image processing apparatus and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152861 A1 - Document ID: US20140152861A1 - Status: Published application - Kind: A1 - Application number: 14/073,340 - Filed: 2013-11-06 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Samsung Techwin Co., Ltd. - Applicants: Samsung Techwin Co., Ltd. - Inventors: Takeru TSUZUKI - Web page: https://patentgrep.com/patent/US20140152861A1 ## CPC - H04N 23/6811: {based on the image signal} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Provided is an image processing apparatus and method. The image processing apparatus includes: a detection unit configured to detect a motion by using a long-exposed image in a current frame and a long-exposed image in a previous frame; and a processing unit configured to perform infinite impulse response (IIR) filtering on a short-exposed image in the current frame according to a result of the detecting of the motion which is obtained from the detection unit. ## Claims ### Claim 1 An image processing apparatus comprising: a detection unit configured to detect a motion by using a long-exposed image in a current frame and a long-exposed image in a previous frame; and a processing unit configured to perform infinite impulse response (IIR) filtering on a short-exposed image in the current frame according to a result of the detecting of the motion which is obtained from the detection unit. ### Claim 2 (depends on 1) The image processing apparatus of claim 1, wherein the long-exposed image and the short-exposed image are sequentially captured by an image sensor. ### Claim 3 (depends on 2) The image processing apparatus of claim 2, wherein the processing unit is configured to combine a result of the IIR filtering that is performed on the short-exposed image in the current frame and a result of the IIR filtering that is performed on the short-exposed image in the previous frame, and output a result of the combining of the results. ### Claim 4 (depends on 3) The image processing apparatus of claim 3, wherein the processing unit is configured to perform the IIR filtering on the short-exposed image in the current frame by using a cyclic coefficient which varies according to the result of the detecting of the motion. ### Claim 5 (depends on 4) The image processing apparatus of claim 4, wherein the cyclic coefficient is set to be proportional to a motion value corresponding to the result of the detection of the motion at least within a predetermined range. ### Claim 6 (depends on 5) The image processing apparatus of claim 5, wherein the predetermined range is between a first threshold and a second threshold, and wherein, if the motion value is lower than the first threshold, the cyclic coefficient is set to a minimum value, and if the motion value is higher than the second threshold, the cyclic coefficient is set to a maximum value. ### Claim 7 (depends on 6) The image processing apparatus of claim 6, further comprising a synthesis unit configured to synthesize the long-exposed image in the current frame and the result of the IIR filtering that is performed on the short-exposed image in the current frame obtained from the processing unit. ### Claim 8 (depends on 1) The image processing apparatus of claim 1, wherein the processing unit is configured to combine a result of the IIR filtering that is performed on the short-exposed image in the current frame and a result of the IIR filtering that is performed on the short-exposed image in the previous frame, and output a result of the combining of the results. ### Claim 9 (depends on 1) The image processing apparatus of claim 1, wherein the processing unit is configured to perform the IIR filtering on the short-exposed image in the current frame by using a cyclic coefficient which varies according to the result of the detecting of the motion. ### Claim 10 (depends on 1) The image processing apparatus of claim 1, further comprising a synthesis unit configured to synthesize the long-exposed image in the current frame and the result of the IIR filtering that is performed on the short-exposed image in the current frame obtained from the processing unit. ### Claim 11 An image processing method comprising: detecting a motion by using a long-exposed image in a current frame and a long-exposed image in a previous frame; and performing infinite impulse response (IIR) filtering on the short-exposed image in the current frame according to a result of the detecting of the motion. ### Claim 12 (depends on 11) The image processing method of claim 11, wherein the long-exposed image and the short-exposed image are sequentially captured by an image sensor. ### Claim 13 (depends on 12) The image processing method of claim 12, wherein the IIR filtering is performed by combining the result of the IIR filtering that is performed on the short-exposed image in the current frame and a result of the IIR filtering that is performed on a short-exposed image in the previous frame, and outputting a result of the combining of the results. ### Claim 14 (depends on 13) The image processing method of claim 13, wherein the IIR filtering on the short-exposed image in the current frame is performed by using a cyclic coefficient which varies according to the result of the detecting of the motion. ### Claim 15 (depends on 14) The image processing method of claim 14, wherein the cyclic coefficient is set to be proportional to a motion value corresponding to the result of the detection of the motion at least within a predetermined range. ### Claim 16 (depends on 15) The image processing method of claim 15, wherein the predetermined range is between a first threshold and a second threshold, and wherein, if the motion value is lower than the first threshold, the cyclic coefficient is set to a minimum value, and if the motion value is higher than the second threshold, the cyclic coefficient is set to a maximum value. ### Claim 17 (depends on 16) The image processing method of claim 16, further comprising synthesizing the long-exposed image in the current frame and a result of the IIR filtering that is performed on the short-exposed image in the current frame. ### Claim 18 (depends on 11) The image processing method of claim 11, wherein the IIR filtering is performed by combining the result of the IIR filtering that is performed on the short-exposed image in the current frame and a result of the IIR filtering that is performed on a short-exposed image in the previous frame, and outputting a result of the combining of the results. ### Claim 19 (depends on 11) The image processing method of claim 11, wherein the IIR filtering on the short-exposed image in the current frame is performed by using a cyclic coefficient which varies according to the result of the detecting of the motion. ### Claim 20 (depends on 11) The image processing method of claim 11, further comprising synthesizing the long-exposed image in the current frame and a result of the IIR filtering that is performed on the short-exposed image in the current frame.