TWI477737B - Electronic apparatus and method with measuring function - Google Patents

Description

Electronic device and method with measurement function

The present invention relates to an electronic device and method having a measurement function.

At present, due to the portability of the portable electronic device, it is more convenient to integrate some commonly used functions on the electronic device. In daily life, the user sometimes needs to estimate the size of an object, but there is no amount around. When measuring a tool, the size of the object to be tested cannot be measured.

In view of this, it is desirable to provide an electronic device and method having a measurement function.

The electronic device with the measurement function includes an image capturing unit for capturing an image of the object to be tested, the camera unit has a shooting angle of view, and a distance measuring unit for measuring the distance between the electronic device and the object to be tested; a distance measuring module, in response to a measurement operation of the user, controlling the distance measuring unit to measure the distance between the electronic device and the object to be tested; a camera picture size calculating module, according to the obtained electronic device and the object to be tested The distance and the shooting angle of the camera unit calculate the actual size of the image taken by the camera unit; a proportional acquisition module acquires an image of the image taken by the camera unit, and determines the size of the object to be tested according to the acquired image. The ratio of the size of the object to be measured; the size of the object to be tested calculated by the ratio acquisition module accounts for the size of the image taken and the actual size of the image taken by the camera unit calculated by the module Calculating the size of the object to be tested; a display module, displaying the measured size of the object to be tested on the user.

In the measuring method applied to an electronic device, the electronic device includes an imaging unit for capturing an image of the object to be tested, the camera unit has a shooting angle, and the method includes: controlling a distance measurement in response to a measurement operation of the user The unit measures the distance between the electronic device and the object to be tested; calculates the actual size of the image taken by the camera unit according to the distance between the acquired electronic device and the object to be tested and the shooting angle of the camera unit; and acquires the image taken by the camera unit. Image, and determining, according to the acquired image, the ratio of the size of the object to be measured to the size of the captured image; calculating the object to be tested according to the ratio of the size of the object to be measured to the size of the image taken and the actual size of the image taken by the camera unit The size of the measured object to be tested is displayed to the user.

Compared with the prior art, the present invention measures the size of the object to be tested in time by setting a measuring function for the electronic device to when there is no other measuring tool around when needed.

As shown in FIG. 1, it is a block diagram of an electronic device 1 (hereinafter referred to as "electronic device") having a measurement function according to an embodiment of the present invention. The electronic device includes an imaging unit 11, a distance measuring unit 12, a processing unit 13, and a display unit 14. The distance measuring unit 12 is disposed next to the imaging unit 11, and the distance between the electronic device 1 and the object to be tested 2 can be measured. In the present embodiment, the distance measuring unit 12 is an infrared distance measuring instrument. When measuring the distance, the distance measuring unit 12 can be adjusted such that the measured distance is the vertical distance between the electronic device 1 and the object to be tested 2. The imaging unit 11 is configured to capture an image of the object to be tested, and the photographing angle of the photographed object is θ.

The processing unit 13 includes a ranging module 131, a camera image size calculation module 132, a proportional acquisition module 133, a sample size calculation module 134, and a display module 135. The ranging module 131 is configured to respond to a measurement operation of the user, and the distance measuring unit 12 is controlled to measure the distance between the electronic device 1 and the object to be tested. The imaging screen size calculation module 132 is configured according to the acquired electronic device 1 The distance between the objects to be tested 2 and the photographing angle of view of the image pickup unit 11 calculate the actual size of the screen taken by the image pickup unit 11. The size in the present embodiment refers to the length and the width. For convenience of description, only the length of the object to be tested 2 is calculated as an example.

When calculating the length of the image capturing screen, as shown in FIG. 2, if the vertical distance between the electronic device 1 and the object to be tested 2 measured by the distance measuring unit 12 is D, and the shooting angle of the image capturing unit 11 is θ, then according to The angular relationship of the triangles gives the actual length of the camera picture L=2*D1*tgθ. After the actual length of the image capture screen is determined, the ratio acquisition module 133 acquires the image of the object 2 to be tested, and determines the long ratio K of the long-term image of the object to be tested 2 according to the acquired image. Finally, the object size calculation module 134 can calculate the length ratio K of the object to be detected and the image frame calculated by the camera size calculation module 132 according to the length of the object 2 to be measured calculated by the ratio acquisition module 133. The actual length is calculated as the length of the object to be tested X=2*D1*tgθ*K. Similarly, the width of the object 2 can be measured. The measured size of the object 2 to be tested can be displayed to the user through the display unit 14.

After the length and width of the object 2 are calculated, the area of the object 2 can be calculated based on the calculated length and width.

As shown in FIG. 3, it is a flowchart of a method of measuring the size of the object 2 by the electronic device 1. First, the ranging module 131 controls the distance measuring unit 12 to measure the distance between the electronic device 1 and the object to be tested 2 in response to a measurement operation of the user (step 301).

The imaging screen size calculation module 132 calculates the actual size of the image captured by the imaging unit 11 based on the acquired distance between the electronic device 1 and the object to be tested 2 and the imaging angle of view of the imaging unit 11 (step S302).

After the actual size of the image captured by the camera unit 11 is determined, the ratio acquisition module 133 acquires the image of the object 2 to be tested, and determines the size of the object to be tested 2 in the image according to the acquired image of the object 2 to be inspected. The ratio K of the size of the image (step S303).

The object size calculation module 134 calculates the ratio of the size of the object 2 to be measured calculated by the scale acquisition module 133 to the size of the captured image and the size of the image captured by the camera size calculation module 132. The size of the object 2 is measured (step S304).

The test result display module 135 displays the size of the measured object 2 to be displayed to the user through the display unit 14 (step S305).

1. . . Electronic device

11. . . Camera unit

12. . . Distance measuring unit

13. . . Processing unit

14. . . Display unit

2. . . Analyte

131. . . Ranging module

132. . . Camera screen size calculation module

133. . . Proportional acquisition module

134. . . DUT size calculation module

135. . . Display module

1 is a block diagram of an electronic device having a measurement function according to an embodiment of the present invention.

FIG. 2 is a schematic view of the case where the size of the object to be tested is calculated using the electronic device of FIG. 1.

3 is a flow chart of a method of measuring an object size by an electronic device.

Claims (10)

An electronic device having a measuring function, the electronic device comprising: an image capturing unit for capturing an image of the object to be tested, the camera unit having a shooting angle of view, wherein the electronic device further comprises:
a distance measuring unit for measuring a distance between the electronic device and the object to be tested;
a ranging module, in response to a measurement operation of the user, controlling the distance measuring unit to measure a distance between the electronic device and the object to be tested;
a camera picture size calculation module calculates the actual size of the picture taken by the camera unit according to the distance between the acquired electronic device and the object to be tested and the shooting angle of the camera unit;
a ratio acquisition module acquires an image of a picture taken by the camera unit, and determines a ratio of a size of the object to be measured to a size of the captured image according to the acquired image;
The object size calculation module calculates the object to be tested according to the ratio of the size of the object to be measured calculated by the ratio acquisition module to the size of the image taken and the actual size of the image taken by the camera unit calculated by the module. size of;
A display module displays the measured size of the object to be tested on the user. The electronic device with a measuring function according to claim 1, wherein the distance measuring unit is an infrared distance measuring device. The electronic device with a measurement function according to claim 1, wherein the camera screen size calculation module calculates the actual size of the picture taken by the camera unit: L=2*D*tgθ, Where L is the length or width of the actual size of the ingested picture, D is the distance between the electronic device and the object to be tested, and θ is the viewing angle of the imaging unit. The electronic device with measurement function according to claim 3, wherein the formula used by the object size calculation module to calculate the size of the object to be tested is: X=L*K, where X is to be The length or width of the object, K is the ratio of the size of the object to be measured to the size of the image taken, and L is the length or width of the picture taken by the camera unit. The electronic device with measurement function according to claim 1, wherein the area of the object to be tested is calculated according to the calculated size of the object to be tested. A measuring method applied to an electronic device, the electronic device comprising an image capturing unit for capturing an image of the object to be tested, the camera unit having a shooting angle of view, wherein the method comprises:
Responding to a measurement operation of the user, controlling a distance measuring unit to measure a distance between the electronic device and the object to be tested;
Calculating an actual size of a picture taken by the camera unit according to the distance between the acquired electronic device and the object to be tested and the shooting angle of the imaging unit;
Obtaining an image of the image taken by the camera unit, and determining, according to the acquired image, a ratio of a size of the object to be tested to a size of the captured image;
Calculating the size of the object to be tested according to the ratio of the size of the object to be tested to the size of the captured image and the actual size of the picture taken by the camera unit;
The measured size of the object to be tested is displayed to the user. The measuring method applied to an electronic device according to claim 6, wherein the distance measuring unit is an infrared distance measuring device. The measurement method applied to an electronic device according to claim 6, wherein the formula used in calculating the actual size of the picture taken by the camera unit is: L=2*D*tgθ, where L is the image. The length or width of the picture taken by the unit, D is the distance between the electronic device and the object to be tested, and θ is the shooting angle of the camera unit. The measuring method applied to an electronic device according to claim 8, wherein the formula used for calculating the size of the object to be tested is: X=L*K, where X is the length or width of the object to be tested. K is the ratio of the size of the object to be measured to the size of the image taken, and L is the length or width of the picture taken by the camera unit. The measuring method applied to an electronic device according to claim 6, wherein the area of the object to be tested is calculated according to the calculated size of the object to be tested.