ORAL CAVITY DETECTION METHOD, ORAL CAVITY DETECTION DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM
The present disclosure provides an oral cavity detection method. The method comprises: acquiring an ultraviolet light image of the oral cavity; determining a first region including a tooth region and at least one portion of a gum region based on the ultraviolet light image; acquiring a non-ultraviolet light image of the oral cavity; acquiring from the non-ultraviolet light image a first intermediate image that only includes the corresponding first region of the non-ultraviolet light image, based on the non-ultraviolet light image and the first region; determining a second region that only includes the tooth region, based on the first intermediate image; and determining the proportion of pixels containing dental plaque in a second intermediate image that only includes the corresponding second region of the ultraviolet light image. Through the combined use of ultraviolet light and non-ultraviolet light images, the oral cavity detection method proposed by one embodiment according to the present disclosure can accurately determine a tooth region, and thereby can accurately determine the proportion of pixels containing dental plaque, so as to provide a favorable basis for dental plaque assessment.
1 . An oral cavity detection method, wherein the oral cavity detection method comprises:
acquiring an ultraviolet light image of the oral cavity;
determining a first region comprising a tooth region and at least one portion of a gum region based on the ultraviolet light image;
acquiring a non-ultraviolet light image of the oral cavity;
acquiring from the non-ultraviolet light image a first intermediate image that only comprises the corresponding first region of the non-ultraviolet light image, based on the non-ultraviolet light image and the first region;
determining a second region that only comprises the tooth region, based on the first intermediate image; and
determining the proportion of pixels containing dental plaque in a second intermediate image that only comprises the corresponding second region of the ultraviolet light image.
2 . The oral cavity detection method according to claim 1 , wherein the determination of the proportion of pixels containing dental plaque in the second intermediate image that only comprises the corresponding second region of the ultraviolet light image further comprises:
converting the second intermediate image from an RGB color space to an HSV color space;
receiving a dental plaque comparison threshold; and
determining the proportion of pixels containing dental plaque based on the second intermediate image converted to the HSV color space and the dental plaque comparison threshold.
3 . The oral cavity detection method according to claim 1 , wherein the determination of the first region comprising the tooth region and the at least one portion of the gum region based on the ultraviolet light image further comprises:
performing a median filtering operation on the ultraviolet light image and converting the ultraviolet light image into a gray-scale image; and
performing an adaptive threshold segmentation operation to determine the first region.
4 . The oral cavity detection method according to claim 3 , wherein the determination of the first region comprising the tooth region and the at least one portion of the gum region based on the ultraviolet light image further comprises:
adjusting the contrast of the ultraviolet light image.
5 . The oral cavity detection method according to claim 1 , wherein the determination of the second region that only comprises the tooth region based on the first intermediate image further comprises:
performing a median filtering operation on the first intermediate image and converting the first intermediate image into a gray-scale image; and
performing an adaptive threshold segmentation operation to determine the second region.
6 . The oral cavity detection method according to claim 5 , wherein the determination of the second region that only comprises the tooth region based on the first intermediate image further comprises:
adjusting the contrast of the first intermediate image.
7 . The oral cavity detection method according to claim 1 , wherein the non-ultraviolet light is white light or yellow light.
8 . An oral cavity detection device, characterized by comprising:
a non-ultraviolet light module, configured to emit non-ultraviolet light;
an ultraviolet light module, configured to emit ultraviolet light;
an image capturing device, configured to acquire a non-ultraviolet light image of the oral cavity and an ultraviolet light image of the oral cavity; and
a image processing device, configured to determine the proportion of pixels containing dental plaque based on the non-ultraviolet light image and the ultraviolet light image.
9 . The oral cavity detection device according to claim 8 , wherein the image processing device is further configured to:
acquire an ultraviolet light image of the oral cavity;
determine a first region comprising a tooth region and at least one portion of a gum region based on the ultraviolet light image;
acquire a non-ultraviolet light image of the oral cavity;
acquire from the non-ultraviolet light image a first intermediate image that only comprises the corresponding first region of the non-ultraviolet light image, based on the non-ultraviolet light image and the first region;
determine a second region that only comprises the tooth region, based on the first intermediate image; and
determine the proportion of pixels containing dental plaque in a second intermediate image that only comprises the corresponding second region of the ultraviolet light image.
10 . The oral cavity detection device according to claim 9 , wherein the determination of the proportion of pixels containing dental plaque in the second intermediate image that only comprises the corresponding second region of the ultraviolet light image further comprises:
converting the second intermediate image from an RGB color space to an HSV color space;
receiving a dental plaque comparison threshold; and
determining the proportion of pixels containing dental plaque based on the second intermediate image converted to the HSV color space and the dental plaque comparison threshold.
11 . The oral cavity detection device according to claim 9 , wherein the determination of the first region comprising the tooth region and the at least one portion of the gum region based on the ultraviolet light image further comprises:
performing a median filtering operation on the ultraviolet light image and converting the ultraviolet light image into a gray-scale image; and
performing an adaptive threshold segmentation operation to determine the first region.
12 . The oral cavity detection device according to claim 11 , wherein the determination of the first region comprising the tooth region and the at least one portion of the gum region based on the ultraviolet light image further comprises:
adjusting the contrast of the ultraviolet light image.
13 . The oral cavity detection device according to claim 9 , wherein the determination of the second region that only comprises the tooth region based on the first intermediate image further comprises:
performing a median filtering operation on the first intermediate image and converting the first intermediate image into a gray-scale image; and
performing an adaptive threshold segmentation operation to determine the second region.
14 . The oral cavity detection device according to claim 13 , wherein the determination of the second region that only comprises the tooth region based on the first intermediate image further comprises:
adjusting the contrast of the first intermediate image.
15 . The oral cavity detection device according to claim 8 , wherein the non-ultraviolet light is white light or yellow light.
16 . A tangible computer-readable storage medium, wherein the storage medium comprises an instruction for executing the oral cavity detection method, and when the instruction is executed, a processor of the computer is configured at least to:
acquire an ultraviolet light image of the oral cavity;
determine a first region comprising a tooth region and at least one portion of a gum region based on the ultraviolet light image;
acquire a non-ultraviolet light image of the oral cavity;
acquire from the non-ultraviolet light image a first intermediate image that only comprises the corresponding first region of the non-ultraviolet light image, based on the non-ultraviolet light image and the first region;
determine a second region that only comprises the tooth region, based on the first intermediate image; and
determine the proportion of pixels containing dental plaque in a second intermediate image that only comprises the corresponding second region of the ultraviolet light image.
17 . The computer-readable storage medium according to claim 16 , wherein the determination of the proportion of pixels containing dental plaque in the second intermediate image that only comprises the corresponding second region of the ultraviolet light image further comprises:
converting the second intermediate image from an RGB color space to an HSV color space;
receiving a dental plaque comparison threshold; and
determining the proportion of pixels containing dental plaque based on the second intermediate image converted to the HSV color space and the dental plaque comparison threshold.
18 . The computer-readable storage medium according to claim 16 , wherein the determination of the first region comprising the tooth region and the at least one portion of the gum region based on the ultraviolet light image further comprises:
performing a median filtering operation on the ultraviolet light image and converting the ultraviolet light image into a gray-scale image; and
performing an adaptive threshold segmentation operation to determine the first region.
19 . The computer-readable storage medium according to claim 18 , wherein the determination of the first region comprising the tooth region and the at least one portion of the gum region based on the ultraviolet light image further comprises:
adjusting the contrast of the ultraviolet light image.
20 . The computer-readable storage medium according to claim 16 , wherein the determination of the second region that only comprises the tooth region based on the first intermediate image further comprises:
performing a median filtering operation on the first intermediate image and converting the first intermediate image into a gray-scale image; and
performing an adaptive threshold segmentation operation to determine the second region.
21 . The computer-readable storage medium according to claim 20 , wherein the determination of the second region that only comprises the tooth region based on the first intermediate image further comprises:
adjusting the contrast of the first intermediate image.
22 . The computer-readable storage medium according to claim 16 , wherein the non-ultraviolet light is white light or yellow light.