# US 2014/0193095 A1 · Method and apparatus for image correction > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193095 A1 - Document ID: US20140193095A1 - Status: Published application - Kind: A1 - Application number: 14/146,256 - Filed: 2014-01-02 - Published: 2014-07-10 - Earliest claimed: 2013-01-04 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Won-hee CHOE; Jae-guyn LIM; Seong-deok LEE - Web page: https://patentgrep.com/patent/US20140193095A1 ## CPC - G06T 5/70: Denoising; Smoothing - G06T 5/10: using non-spatial domain filtering - G06T 5/94: based on local image properties, e.g. for local contrast enhancement - G06T 2207/10101: Optical tomography; Optical coherence tomography [OCT] - G06T 2207/10132: Ultrasound image - G06T 2207/20064: Wavelet transform [DWT] - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract Image correcting methods and apparatuses for removing speckles from an image are provided. The image correcting method includes selecting a first region in an image; removing a speckle from a second region except for the first region from the image by using image information at a predetermined frequency band in the image; and increasing a contrast level of the first region. ## Claims ### Claim 1 An image correcting method comprising: selecting a first region in an image; removing a speckle from a second region except for the first region from the image by using image information at a predetermined frequency band in the image; and increasing a contrast level of the first region and decreasing a contrast level of a region of the speckle in the second region. ### Claim 2 (depends on 1) The image correcting method of claim 1, wherein removing the speckle comprises selecting the second region from the image including the image information at the predetermined frequency band by using positional information of the selected first region, and removing the speckle from the selected second region. ### Claim 3 (depends on 2) The image correcting method of claim 2, further comprising creating a speckle removed image by combining the image information at the predetermined frequency band in the speckle removed image with the image information at a remaining frequency band except for the predetermined frequency band, and wherein the increasing the contrast level comprises increasing the contrast level of the first region and decreasing the contrast level of the region of the speckle by using the speckle removed image. ### Claim 4 (depends on 1) The image correcting method of claim 1, wherein the selecting of the first region comprises the selecting of the first region in the image by a user or by analyzing shape information on a subject displayed in the image. ### Claim 5 (depends on 1) The image correcting method of claim 1, wherein the image information at the predetermined frequency band comprises high frequency signals that are included in the image. ### Claim 6 (depends on 1) The image correcting method of claim 1, wherein the removing of the speckle comprises the removing of the speckle by using a first model including speckle information on a tissue that is included in a subject in the image. ### Claim 7 (depends on 1) The image correcting method of claim 1, wherein the increasing of the contrast level comprises increasing brightness values of pixels corresponding to the first region among pixels in the image and decreasing brightness values of pixels corresponding to the region of the speckle. ### Claim 8 (depends on 7) The image correcting method of claim 7, wherein the increasing of the contrast level comprises: aligning pixels in the image on the basis of the brightness values of the pixels; increasing the brightness values of the pixels corresponding to the first region by mapping, to a first predetermined brightness value, a brightness value which most pixels represent among the pixels corresponding to the first region; and decreasing the brightness values of the pixels of the region of the speckle by mapping, to a second predetermined brightness value, a brightness value which most pixels represent among the pixels corresponding to the region of the speckle. ### Claim 9 (depends on 8) The image correcting method of claim 8, wherein the aligning of pixels in the image comprises the aligning of pixels in the image by using a second model including information on an image recreating apparatus and a tissue that is included in a subject in the image. ### Claim 10 (depends on 1) A non-transitory computer readable storage medium having thereon a program to execute the image correcting method of claim 1 with a computer. ### Claim 11 (depends on 1) The image correcting method of claim 1, wherein the first region comprises a region of interest. ### Claim 12 An image correcting apparatus comprising: a region of interest selector configured to select a first region in an image; a speckle remover configured to remove a speckle from a second region except for the first region from the image by using image information at a predetermined frequency band in the image; and a contrast processor configured to increase a contrast level of the first region and decrease a contrast level of a region of the speckle in the second region. ### Claim 13 (depends on 10) The image correcting apparatus of claim 10, wherein the speckle remover is configured to select the remaining region from the image including the image information at the predetermined frequency band by using positional information of the selected first region, and to remove the speckle from the selected second region. ### Claim 14 (depends on 11) The image correcting apparatus of claim 11, further comprising an image recreator that is configured to create a speckle removed image by combining the image information at the predetermined frequency band in the speckle removed image with the image information at a remaining frequency band except for the predetermined frequency band, wherein the contrast processor is configured to increase the contrast level of the first region and decrease the contrast level of the region of the speckle by using the speckle removed image. ### Claim 15 (depends on 10) The image correcting apparatus of claim 10, wherein the first region is selected from the image by a user or is selected by analyzing shape information of a subject displayed in the image. ### Claim 16 (depends on 10) The image correcting apparatus of claim 10, wherein the image information at the predetermined frequency band comprises high frequency signals that are included in the image. ### Claim 17 (depends on 10) The image correcting apparatus of claim 10, wherein the speckle remover is configured to remove the speckle by using a first model including speckle information on a tissue that is included in a subject in the image. ### Claim 18 (depends on 10) The image correcting apparatus of claim 10, wherein the contrast processor is configured to increase brightness values of pixels corresponding to the first region among pixels in the image and to decreases brightness values of pixels corresponding to the region of the speckle. ### Claim 19 (depends on 16) The image correcting apparatus of claim 16, wherein the contrast processor is further configured to: align pixels in the image on the basis of the brightness values of the pixels; increase the brightness values of the pixels corresponding to the first region by mapping, to a first predetermined brightness value, a brightness value which most pixels represent among the pixels corresponding to the first region; and decrease the brightness values of the pixels of the region of the speckle by mapping, to a second predetermined brightness value, a brightness value which most pixels represent among the pixels corresponding to the region of the speckle. ### Claim 20 (depends on 17) The image correcting apparatus of claim 17, wherein the contrast processor is configured to use a second model including information on an image recreating apparatus and a tissue in a recreated image to align pixels in the image. ### Claim 21 An image correcting system comprising: an image creating apparatus configured to create an image including a region of interest; an image correcting apparatus configured to select the region of interest in the image, remove a speckle from a remaining region except for the region of interest in the image by using image information at a predetermined frequency band in the image, and increase a contrast level of the region of interest; and an image display apparatus configured to display the image increased contrast level.