WO2021078169A1

WO2021078169A1 - Barcode reading method and terminal

Info

Publication number: WO2021078169A1
Application number: PCT/CN2020/122566
Authority: WO
Inventors: 王冬生; 申世安; 张立静; 张颂来; 陈辰
Original assignee: 深圳盈达信息科技有限公司
Priority date: 2019-10-26
Filing date: 2020-10-21
Publication date: 2021-04-29
Also published as: CN110852127A

Abstract

Disclosed is a barcode reading terminal (100), comprising a camera (2) for collecting images; a light supplementing lamp (3) for supplementing light; and a control unit (5) for controlling the camera (2) to collect a first image when the light supplementing lamp (3) is in an off state, and for further determining whether there is a barcode (10) in the first image, controlling, when the barcode (10) is in the first image, the light supplementing lamp (3) to supplement light, and further controlling the camera (2) to collect a second image. When the first image is collected, the light supplementing lamp (3) does not emit light; when it is determined that the barcode (10) is in the first image, and the second image is then collected, the light supplementing lamp (3) supplements light, such that energy is further saved; and at the same time, the light supplementing lamp (3) can be prevented from being aligned with human eyes due to an error during scanning, and can thus be prevented from hurting human eyes.

Description

Bar code reading method and terminal

priority

The PCT patent application requires the application date to be October 26, 2019, the application number is 201911026940.7, and the patent name is "Barcode Recognition Method and Terminal". The patent application combines the technical solutions of the above patents.

Technical field

The present disclosure relates to a barcode reading method and terminal, in particular to a barcode reading method and terminal.

Background technique

In an existing scanner, when the scan engine is triggered and enters the working state, the scanner will start the illumination source to illuminate, and collect images through the scan engine, and these images are further processed to decode the barcode in the image. Since the illumination source will illuminate regardless of whether there is a barcode in the image collected by the scan engine, the power consumption is high; and when the scan engine is triggered by mistake, if the scanner is facing the face at the same time, the scanner will still start The illumination source is used to illuminate, which will inevitably cause harm to human eyes.

In view of the above problems, the present disclosure provides a new barcode reading method and terminal, and adopts new methods and technical means to solve these problems.

Public content

In view of the problems faced by the background art, the purpose of the creation of the present disclosure is to provide a barcode reading method and terminal that control whether the fill light performs fill light by predicting whether there is a barcode in the image.

In order to achieve the above objectives, the present disclosure adopts the following technical means:

The present disclosure provides a barcode reading method, which includes the following steps: 101: Collect a first image when the fill light is off; 102: Determine whether there is a barcode in the first image, and if there is a barcode, perform step 103 ; If there is no barcode, it ends; 103: fill light and re-acquire the second image; 104: decode the barcode in the second image.

In one implementation, in step 101, collecting the first image is triggered by a gesture.

In an implementation manner, step 101 includes:

The user's gesture is collected, and when the user holds the barcode reading terminal to complete the preset gesture, the camera is triggered to collect the first image.

In an implementation manner, the gesture conforms to a preset gesture, one or more preset gestures are pre-learned through a machine learning algorithm, and one or more preset gestures through the learning are pre-stored.

In one implementation, in step 102, determining whether there is a barcode in the first image is triggered by a gesture.

In an implementation manner, in step 102, it is determined whether the barcode exists in the first image is triggered by a trigger button.

In an implementation manner, the first image is only used to determine whether there is a barcode and is not used for decoding.

The present disclosure provides a barcode reading terminal, which includes: a camera to collect images; a light supplement light to supplement light; and a control unit to control the camera to collect when the light supplement light is off The first image is used to further determine whether there is a barcode in the first image, and when there is a barcode in the first image, the fill light is controlled to fill the light, and the camera is further controlled to collect the second image.

In an implementation manner, the camera and the fill light are separately provided.

In one implementation, the control unit is also used to decode the barcode in the second image.

In an implementation manner, a sensor is included to collect the user's gesture, and when the user's gesture matches a preset gesture, the control unit is triggered to predict the first image.

In an implementation manner, a trigger button is included to trigger the control unit to prejudge the first image.

In one implementation, the trigger button is also used to light up the display screen, so that the control unit and the camera are activated from the sleep state

In an implementation manner, an aiming unit is included, and the control unit is further used for controlling the aiming unit to transmit an aiming pattern when it is determined that there is a barcode in the first image.

Compared with the prior art, the present disclosure has the following beneficial effects:

The fill light is turned off when the camera captures the first image, and the control unit is used to determine whether there is a barcode in the first image, and when there is a barcode in the first image, the fill light is controlled to perform Fill light, and control the camera to collect the second image in the fill light environment. When the first image is collected, the fill light does not emit light, and when it is determined that there is a barcode in the first image, and then the second image is collected, the fill light only performs fill light, so It is more energy-saving, and at the same time, it can avoid aiming at people's eyes due to mistakes during scanning, and the fill-in light will sting people's eyes.

Description of the drawings

Figure 1 is a block diagram of a barcode reading terminal of the present disclosure;

Fig. 2 is a schematic diagram of barcode reading by the barcode reading terminal of the present disclosure, which shows that the fill light does not fill light when there is no barcode, and fills light when there is a barcode;

3 is a schematic diagram of a barcode reading terminal triggering scanning by gestures in an embodiment of the present disclosure;

4 is a schematic diagram of a barcode reading terminal continuously scanning items on the assembly line in an embodiment of the present disclosure;

FIG. 5 is a flowchart of barcode reading by a barcode reading terminal in an embodiment of the present disclosure.

Description of reference signs for specific implementations:

条码识读终端100 Barcode reading terminal 100	扫描头1Scan head 1	摄像头2 Camera 2	补光灯3 Fill light 3	瞄准单元4Aiming unit 4
控制单元5Control unit 5	存储单元6 Storage unit 6	触发按键7Trigger button 7	显示屏8 Display 8	传感器9Sensor 9

Barcode 10

To

Detailed ways

In order to facilitate a better understanding of the purpose, structure, features, and effects of the present disclosure, the present disclosure will now be further described with reference to the accompanying drawings and specific embodiments.

1 is a block diagram of a barcode reading terminal 100 of the present disclosure. The main components of the barcode reading terminal 100 include: a scanning head 1, a control unit 5, and a storage unit 6.

The scanning head 1 is an integrated device, which mainly includes a camera 2 and a fill light 3, the camera 2 is used to collect images; the fill light 3 is used to fill light. In an implementation manner, the scan head 1 may further include an aiming unit 4, such as laser aiming or LED aiming, and the aiming unit 4 is used to emit an aiming pattern to guide the user to accurately aim the barcode 10 to be read. In an embodiment (not shown, the same below), the camera 2 and the fill light 3 can be set separately, and not integrated on the scan head 1, in other words, there is no need to set an integrated scan head 1 .

The control unit 5 is used for controlling the camera 2 to collect images and controlling the light supplement lamp 3 to supplement light. The storage unit 6 is used to store various data or programs.

The barcode reading terminal 100 may also include one or more trigger buttons 7, and the trigger buttons 7 may be used for user operations to trigger the control unit 5 to issue control instructions. The trigger button 7 can be used to light up the display screen 8. Generally, lighting up the display screen 8 also means that the control unit 5, the camera 2 and other elements are activated from the sleep state. The trigger button 7 may be a physical button or a virtual button on the display screen 8.

Please supplement with reference to FIG. 2. When the camera 2 is in the activated state, it starts to collect images. These images usually do not need to be decoded by the control unit 5. At this time, the power consumption of the barcode reading terminal 100 is also Lower. When the control unit 5 is triggered by the trigger button 7, it prejudges a frame of image collected by the camera 2 before being triggered, and defines this frame of image as the first image, and the control unit 5 Determine whether there is a barcode 10 in the first image by feature extraction; or when the control unit 5 is triggered by the trigger button 7, it will first send an instruction to the camera 2 to control the camera 2 in the supplement The first image is collected when the light 3 is turned off, and the control unit 5 further determines whether there is a barcode 10 in the first image through feature extraction. At this time, although the brightness of the first image is relatively dark, since there is no need to decode the barcode 10 that may exist in the first image, that is, there is no need to obtain more detailed information of the barcode 10 that may exist in the first image. It is also possible to successfully predict the possible barcode 10 in the first image, and the speed is very fast. When the control unit 5 determines that there is no barcode 10 in the first image, it ends this image pre-judgment; when the control unit 5 determines that there is a barcode 10 in the first image, it controls the complement The light lamp 3 fills in light and controls the camera 2 to collect a second image, and the control unit 5 then decodes the barcode 10 in the second image. When the first image is collected, the fill light 3 does not emit light, and when there is a barcode 10 in the first image, the fill light 3 only performs fill light, so it is more energy-saving and can be avoided at the same time. When scanning, it is aimed at the human eye due to a mistake, and the fill light 3 stabs the human eye.

In the embodiment shown in FIG. 3, the control unit 5 can be triggered by a gesture, that is, by a gesture trigger instead of the trigger button 7 in the foregoing embodiment. In this embodiment, the barcode reading terminal 100 further includes a sensor 9, which is used to collect the user's gesture, and when the user's gesture matches a preset gesture, trigger the control unit 5 to The first image is pre-judged; or, when the user holds the barcode reading terminal 100 to complete a preset gesture, the camera 2 is triggered to collect the first image, and the control unit 5 further controls the first image. A judgment is made on an image, and when there is a barcode 10 in the first image, the camera 2 is controlled to collect the second image, and the barcode 10 in the second image is further decoded. At least one or more preset gestures can be learned in advance by the barcode reading terminal 100 via a machine learning algorithm, and the learned one or more preset gestures are then stored in the storage unit 6 in advance; in this way, The user's usual gestures can also be stored in the storage unit 6 in advance through machine learning. In use, when the user's gesture only needs to match one of a plurality of preset gestures, the control unit 5 can be triggered.

Please supplement with reference to FIG. 4. As shown in FIG. 4, in another embodiment, the control unit 5 does not need to be triggered by the trigger button 7 or gestures, but continuously predicts the images collected by the camera 2. When the control unit 5 determines that there is a barcode 10 in a certain frame of image, it controls the fill light 3 to fill in the light when the camera 2 collects the next frame of image. This is applicable to an automated assembly line. The barcode reading terminal 100 scans the items on the conveyor belt. The camera 2 is always active. When the items are transferred, the camera 2 continuously collects images. The fill light 3 is in the off state, and the control unit 5 performs pre-judgment on these images in turn to determine whether there is a barcode 10 in the image. When a barcode 10 exists in a certain frame of image, the control unit 5 controls The fill light 3 performs fill light when the camera 2 collects the next frame of image of the article. Since the fill light 3 does not fill the predicted image, it only fills the next frame (or the next few frames) of the image collected by the camera 2 when the barcode 10 is predicted, which can reduce power consumption.

As shown in FIG. 5, it is a flowchart of the barcode reading terminal 100 reading the barcode 10 in an embodiment of the present disclosure, including the following steps:

S101: The camera 2 collects a first image when the fill light 3 is in the off state.

Specifically, when the camera 2 is in the activated state, it starts to continuously collect images, and the fill light 3 is in the off state at this time. When the user holds the barcode reading terminal 100 and makes a preset gesture, the control unit 5 can be triggered to pre-judge the previous or next frame of the image collected by the camera 2, and then this frame of image Defined as the first image.

S102: The control unit 5 judges whether there is a barcode 10 in the first image, and if there is a barcode 10, step S103 is executed; if there is no barcode 10, the image pre-judgment is ended.

S103: Fill light and re-acquire a second image.

After determining that the barcode 10 exists in the first image, the control unit 5 sends an instruction to control the fill light 3 to fill light, and control the camera 2 to collect the second image in the fill light environment.

S104: Decode the barcode 10 in the second image.

Since the second image is collected in a supplemental light environment, the brightness is appropriate, and the image definition is higher than that without supplementary light, which is more conducive to decoding. The control unit 5 can also decode the barcode in the second image more quickly 10.

The barcode reading method and terminal of the present disclosure have the following beneficial effects:

The fill light 3 is in a closed state when the camera 2 captures the first image, and the control unit 5 is used to determine whether there is a barcode 10 in the first image, and when there is a barcode 10 in the first image Control the fill light 3 to fill light, and control the camera 2 to collect the second image in the fill light environment. Because when the first image is collected, the fill light 3 does not emit light, and when it is determined that there is a barcode 10 in the first image, and then the second image is collected, the fill light 3 performs the compensation. Therefore, it is more energy-saving, and at the same time, it can prevent the human eye from being aimed at the human eye due to errors during scanning, and the supplementary light 3 pierces the human eye.

The above detailed description is only the description of the preferred embodiments of the present disclosure, and does not limit the scope of the patent of the present disclosure. Therefore, all equivalent technical changes made by using the content of this creation specification and illustrations are included in the creation of the patent. Within range.

Claims

A barcode reading method, which includes the following steps:

101: Collect the first image when the fill light is in the off state;

102: Determine whether there is a barcode in the first image, if there is a barcode, go to step 103; if there is no barcode, then end;

103: Fill light and re-acquire the second image;

104: Decode the barcode in the second image.
5. The barcode reading method of claim 1, wherein: in step 101, collecting the first image is triggered by a gesture.
The barcode reading method according to claim 2, wherein: step 101 includes:

The user's gesture is collected, and when the user holds the barcode reading terminal to complete the preset gesture, the camera is triggered to collect the first image.
The barcode reading method according to claim 2, wherein: the gesture conforms to a preset gesture, one or more preset gestures are pre-learned through a machine learning algorithm, and one or more preset gestures learned through the learning Gestures are stored in advance.
5. The barcode reading method of claim 1, wherein: in step 102, determining whether there is a barcode in the first image is triggered by a gesture.
The barcode reading method of claim 4, wherein: the gesture conforms to a preset gesture, one or more preset gestures are pre-learned through a machine learning algorithm, and one or more preset gestures are learned through the learning Gestures are stored in advance.
5. The barcode reading method of claim 1, wherein: in step 102, determining whether there is a barcode in the first image is triggered by a trigger button.
5. The barcode reading method according to claim 1, wherein: the first image is only used for judging whether there is a barcode and is not used for decoding.
A barcode reading terminal, which includes:

A camera to collect images;

One fill light to fill light;

A control unit for controlling the camera to collect the first image when the fill light is turned off, and for further determining whether there is a barcode in the first image, and when there is a barcode in the first image, controlling the fill light to fill light , And further control the camera to collect the second image.
9. The barcode reading terminal according to claim 9, wherein: the camera and the fill light are separately provided.
9. The barcode reading terminal according to claim 9, wherein: the control unit is further used to decode the barcode in the second image.
9. The barcode reading terminal according to claim 9, wherein it comprises a sensor for collecting a user's gesture, and when the user's gesture matches a preset gesture, the control unit is triggered to predict the first image.
9. The barcode reading terminal according to claim 9, wherein it comprises a trigger button for triggering the control unit to pre-judge the first image.
The barcode reading terminal according to claim 13, wherein: the trigger button is also used to light up the display screen, so that the control unit and the camera are activated from the sleep state.
9. The barcode reading terminal according to claim 9, wherein it comprises an aiming unit, and the control unit is further used for controlling the aiming unit to transmit an aiming pattern when it is determined that the barcode is present in the first image.