Sensing method and apparatus

Patent metadata

Field	Value
Publication number	US-11957432-B2
Application number	US-201916973160-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Jun 14, 2018
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

Disclosed are a sensing method and a sensing apparatus for acquiring information about an object according to one embodiment. In particular, disclosed are a sensing method and a sensing apparatus for obtaining the shape of blood vessels by using information regarding the intensity of received light and information regarding the distance of an object.

First claim

The invention claimed is:

1. A sensing apparatus comprising:
a sensor obtaining an intensity information of a received light and a distance information of an object using the received light reflected from the object; and
a processor obtaining a first shape of a blood vessel of the object using the intensity information and obtaining a second shape of the blood vessel using the distance information and the first shape of the blood vessel,
wherein the processor obtains a shape of the object using the distance information, performs modelling of a basic shape of the object by comparing the obtained shape of the object with a pre-set shape, and determines the second shape of the blood vessel by combining the basic shape of the object and the first shape of the blood vessel, and
wherein the second shape is a shape reflected by a posture difference information of the first shape.

2. The sensing apparatus of claim 1 , wherein the first shape or the second shape includes a thickness information of the blood vessel.

3. The sensing apparatus of claim 1 , comprising a liquid lens controlling a focus of the received light.

4. The sensing apparatus of claim 1 , wherein the second shape is a shape of a blood vessel in a shape of all fingers unfolded on a plane surface.

5. The sensing apparatus of claim 1 , wherein the first shape is determined based on a region where intensity of the received light is relatively weak.

6. The sensing apparatus of claim 1 , wherein the first shape is determined based on a region where intensity of the received light is smaller than an average value of entire region or a pre-set value.

7. The sensing apparatus of claim 1 , wherein the processor compares the second shape with a standard shape stored in a storage.

8. The sensing apparatus of claim 3 , configured to increase an angle of view by controlling the liquid lens when a distance from the sensor to the object is smaller than a pre-set value.

9. The sensing apparatus of claim 3 , wherein the liquid lens is an add on type or an add in type.

10. The sensing apparatus of claim 1 , wherein the processor decreases a receiving amount per hour of the received light or an exposed time of the received light of the sensor when a power of the received light received from the sensor is saturated.

11. A camera module comprising:
a light source outputting an infrared light to an object;
a liquid lens controlling a focus of a received light reflected from the object;
a sensor obtaining an intensity information of the received light and a distance information of the object; and
a processor obtaining a first shape of a blood vessel of the object using the intensity information and obtaining a second shape of the blood vessel using the distance information and the first shape of the blood vessel,
wherein the processor obtains a shape of the object using the distance information, performs modelling of a basic shape of the object by comparing the obtained shape of the object with a pre-set shape, and determines the second shape of the blood vessel by combining the basic shape of the object and the first shape of the blood vessel, and
wherein the second shape is a shape reflected by a posture difference information of the first shape.

12. The camera module of claim 11 , wherein the processor decreases a power of the infrared light outputted from the light source when a power of the received light received from the sensor is saturated.

13. The camera module of claim 11 , wherein the processor decreases an amount of light output per time of the light source or an exposure time of the received light of the sensor when the power of the received light received from the sensor is saturated.

14. The camera module of claim 11 , wherein the processor increases an angle of view by controlling the liquid lens when a distance from the sensor to the object is smaller than a pre-set value.

15. The camera module of claim 11 , the distance information includes an information representing a distance from the sensor to the object, and the liquid lens performs an autofocusing in response to the distance information.

16. The camera module of claim 11 , wherein the first shape is determined based on a region where intensity of the received light is relatively weak.

17. The camera module of claim 11 , wherein the first shape is determined based on a region where intensity of the received light is smaller than an average value of entire region or a pre-set value.

18. The camera module of claim 11 , wherein the second shape is a shape of a blood vessel in a shape of all fingers unfolded on a plane surface.

19. The camera module of claim 11 , wherein the processor compares the second shape with a standard shape stored in a storage.

20. A sensing method comprising:
outputting an output light to an object;
obtaining an intensity information of a received light obtained by allowing the output light to be reflected from the object and obtaining a distance information of the object;
obtaining a shape of a blood vessel of the object and a thickness information using the intensity information;
obtaining a shape of the object using the intensity information;
performing modelling of a basic shape of the object by comparing the obtained shape of object with a pre-set shape;
determining the second shape of the blood vessel by combining the basic shape of the object and the first shape of the blood vessel; and
obtaining a 3D information of the blood vessel using the second shape of the blood vessel, the thickness information, and the distance information,
wherein the second shape is a shape reflected by a posture difference information of the first shape.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Ju Un
• Jang Seong Ha
• Joo Yang Hyun

Classifications

• A61B5/0059 Primary

  using light, e.g. diagnosis by transillumination, diascopy, fluorescence (photoacoustic A61B5/0093; optical measurement of heart rate A61B5/02416; optical measurement of blood flow A61B5/0261; optical measurement of analytes A61B5/1455) · CPC title

• A61B5/02007

  Evaluating blood vessel condition, e.g. elasticity, compliance · CPC title

• A61B5/6887

  mounted on external non-worn devices, e.g. non-medical devices · CPC title

• G01S7/4865

  Time delay measurement, e.g. time-of-flight measurement, time of arrival measurement or determining the exact position of a peak (peak detection in noise, signal conditioning G01S7/487) · CPC title

• G01S17/894

  Three-dimensional [3D] imaging with simultaneous measurement of time-of-flight at a two-dimensional [2D] array of receiver pixels, e.g. time-of-flight cameras or flash lidar · CPC title