公开(公告)号：US11356635B2

公开(公告)日：2022-06-07

申请号：US15161364

申请日：2016-05-23

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Sujit Kumar Mahapatro ,  Karthikeyan Kannaiyan

IPC: H04N7/01 ,  H04N21/2343 ,  H04N19/00

Abstract: An imaging apparatus includes at least one processor to implement: a re-sizer configured to re-size an image to a predetermined size, an encoder configured to encode the re-sized image, and a frame rate controller configured to calculate an actual bit rate of the encoded image for a preset period of time, compare a user-set target bit rate with the calculated actual bit rate, adjust a frame rate of the encoded image according to a result of the comparison, and output an encoded image signal at a user-set target bit rate irrespective of a complexity of the encoded image.

公开(公告)号：US10362307B2

公开(公告)日：2019-07-23

申请号：US15417456

申请日：2017-01-27

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Kyung Pyo Hong ,  Sujit Kumar Mahapatro ,  Yun Seok Kwon ,  Hee Gyu Baek

IPC: H04N19/124 ,  H04N19/126 ,  H04N19/146 ,  H04N7/18 ,  H04N19/139 ,  H04N19/137 ,  H04N5/232

Abstract: A method of determining a quantization parameter includes determining an adjustment range of a quantization parameter correction value based on a size of a motion area of an input image, calculating an average bitrate value of the input image, and adjusting the quantization parameter correction value by decreasing the quantization parameter correction value within the adjustment range in response to determining that the average bitrate value is greater than an upper limit value, and by increasing the quantization parameter correction value within the adjustment range in response to determining that the average bitrate value is equal to or less than a lower limit value.

公开(公告)号：US10999577B2

公开(公告)日：2021-05-04

申请号：US16517817

申请日：2019-07-22

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Kyung Pyo Hong ,  Sujit Kumar Mahapatro ,  Yun Seok Kwon ,  Hee Gyu Baek

IPC: H04N19/114 ,  H04N19/124 ,  H04N19/126 ,  H04N19/139 ,  H04N19/137 ,  H04N19/146 ,  H04N7/18 ,  H04N5/232

Abstract: A method of determining a quantization parameter includes determining an adjustment range of a quantization parameter correction value based on a size of a motion area of an input image, calculating an average bitrate value of the input image, and adjusting the quantization parameter correction value by decreasing the quantization parameter correction value within the adjustment range in response to determining that the average bitrate value is greater than an upper limit value, and by increasing the quantization parameter correction value within the adjustment range in response to determining that the average bitrate value is equal to or less than a lower limit value.