TW201331767A - Method for fast setting image capturing range of pattern - Google Patents

Abstract

The present invention provides a method for fast setting an image capturing range of a pattern, which employs a camera device with an operation processing unit to capture an image of a pattern comprising barcode. The barcode contains the information for image capturing range generated after interpretation, and then the operation processing unit may analyze the information for image capturing range to obtain the data of each boundary required by image capturing. After entering the data of each boundary, the camera device may generate a prompting operation for assisting image capturing, and re-confirm if the image capturing range at this time is complete. If the result is positive "Y", the shooting operation is completed; if the result is negative "N", the operation processing unit will provide an operation suggestion for improvement, such that the operator or a camera device with an automatic control system may modify the angle and position of the camera device based on the contents of the operation suggestion. Then, the process flow described above for capturing the image of a pattern comprising barcode is repeated until the image capturing operation is correctly completed.

Description

Quickly set the image capture range

The invention relates to a method for quickly setting the image capturing range of a pattern, in particular to an operation method which can effectively simplify the image capturing program, is easy to recognize, and can improve the overall pattern recognition efficiency.

In order to combat counterfeiting, countries around the world have continuously developed various anti-counterfeiting technology products. At present, it is more common to attach an anti-counterfeit label (which can be anti-counterfeiting paper, special printing and laser labels, etc.) to the products of Zhengzheng Factory, in order to cooperate with counterfeiting. The product forms a basic division; however, with the improvement of counterfeiting technology, the imitation of the above-mentioned anti-counterfeit labels is also endless. Therefore, in the earlier practice, in addition to the specific anti-counterfeiting pattern and labeling, the anti-counterfeit label will also display one at the same time. Query the serial number and a query route (telephone or fax number) for the consumer to use the communication tool (telephone, fax machine) to contact, and obtain the anti-counterfeiting (voice, fax) description feature of the anti-counterfeiting pattern according to the query serial number. According to the anti-counterfeiting description feature and the pattern of the anti-counterfeit label on the purchased product, the purpose of further confirming the authenticity of the product is achieved; however, the content of the anti-counterfeiting description feature often fails to respond to the content. The pattern on the anti-counterfeit label makes it difficult for consumers to quickly and objectively compare the overall content of the two, resulting in Spend the inconvenience and missing.

With the gradual popularization of the application of smart phones, various photo functions have matured rapidly, so the anti-counterfeiting pattern of the above anti-counterfeit labels is directly imaged on the mobile phone. (or other mobile devices), the way of performing subsequent comparison operations is also becoming more common; and the traditional operation of taking a specific area (on label) pattern by the camera is as shown in Fig. 1, the main process As follows: First, a "photographing device for taking a picture" step S11 is performed by the operator to align the direction and position of a specific area (on the label) with the photographic device on the mobile phone (or mobile device). Image, and wait for the focus to be positioned; after a "visually judge whether the photographing range covers all the patterns" S12 judging step, the operator visually judges whether the pattern in the label (specific area) has completely entered the mirror, if the above visual judgment If the result is negative "N", the operator corrects the photographing angle and position of the photographing device according to the procedure of "correcting the angle and position of the photographing device" S15, and then repeats the "photographing device". If the result of the visual determination is affirmative "Y", the image is imaged in the camera device by a "photographing" step S13, and finally, one is executed. "Is the image content indeed covers all the patterns" S14 determination step, confirming that the image content includes all pattern ranges in the photographic device, and if the result of the determination is negative "N", repeating the "correction of the angle and position of the photographic device" In step S15, if the result of the visual judgment is affirmative "Y", the overall flow is ended.

However, the above-mentioned image capturing method is completely dependent on the visual judgment of the operator itself, and the angle and position of the photographing are corrected according to experience. Therefore, at least basic skills are required for the operation, and the whole is also subjected to various artificial actions. The influence of factors has different results (failure rate), for example, elderly people or people with poor vision, which are not easy to visually and correctly judge the contents of the mirror (pattern) when they are photographed, often after many times. Repeated operation, it is also difficult to complete an effective photographing procedure; in addition, the average person in the external light is too strong or too dark, or the color of the object (pattern) and the background color and pattern are similar In the case, it is difficult to effectively grasp the contents of the image (the pattern) of the image device, and it is easy to cause an increase in the failure rate of the photograph, which greatly affects the application.

In view of the above shortcomings of the photographing method, the inventors have researched and improved the shortcomings of these shortcomings, and finally the present invention has been produced.

The main object of the present invention is to provide a method for quickly setting the image capturing range of a pattern, which can be used to simplify the operation procedure of the image capturing image by using various (image, voice or lens control signals). The convenience of use can also improve the overall work efficiency.

Another object of the present invention is to provide a method for quickly setting the image capturing range of a pattern, which does not require complicated operation analysis for the pattern recognition during the image capturing process, thereby effectively reducing the computing load of the related device and improving the overall working efficiency. .

In order to achieve the above object and effect, the technical means adopted by the present invention include: a step of "photographing a picture for a picture containing a bar code", A picture device having a bar code is imaged by an image processing device of an operation processing unit, and the image range information that can be generated after the interpretation is obtained in the bar code; an "analysis bar code content" program is processed by the operation The unit analyzes the image capturing range information in the barcode, and obtains each boundary value required for image capturing by calculating; a step of “integrating the boundary value of the camera device to form a prompt for assisting image capturing” After the camera device imports the values of the respective boundaries, an auxiliary image capturing action is generated; a "receiving image coverage of all the patterns" determination step, confirming whether the current image capturing range is complete, and if the result is negative "N", then Repeat the above steps of "photographing device for image capturing a barcode" step; a "photographing imaging" step, if the result of the "photographing range covers all patterns" is determined to be a positive "Y", then the photographing action is completed. .

According to the above method, the prompt of the auxiliary image capture is a voice prompt.

According to the above method, the photographic device has a display screen, and the auxiliary image capturing prompt is an image prompt displayed on the display screen.

According to the above method, the prompt of the auxiliary image capturing is a lens control signal.

According to the above method, if the result of the determining step of the "image capturing range covers all patterns" is negative "N", a "providing operation suggestion" step is performed first, and then the "photographing device is applied to a pattern containing a barcode. Take the image step.

According to the above method, the operation suggestion is a voice suggestion.

According to the above method, the photographic device has a display screen, and the operation suggestion is an image suggestion displayed on the display screen.

According to the above method, the step of "providing the operation suggestion" and the step of "taking the image device for capturing a pattern containing the barcode" are further provided with a step of "correcting the angle and position of the photographic device according to the operation suggestion content". The operator can correct the operation as suggested, or the operating unit can be used to control the movement of the lens shifting device in the recommended direction or the change in the focal length of the lens.

According to the above method, after the step of "photographing a picture for a picture containing a bar code", a "completely identifiable barcode" determination step is performed, and if the result of the determination is negative "N", the picture is repeated. The image device is imaged for a pattern containing a barcode. If the determination result is a positive "Y", the "analyze barcode content" program is executed.

According to the above method, the "analysing bar code content" program includes at least a step of "obtaining an anchor point from the bar code and at least one reference length" and a step of "acquiring a direction angle reference line from the bar code" to obtain the bar code. The range information defines the anchor point, reference length and direction angle reference line respectively.

According to the above method, the "analysing bar code content" program further includes a step of "analyzing the image capturing range information in the bar code" and a step of "calculating the image capturing boundary value", which is calculated by the arithmetic processing unit according to the image capturing range information. Take out the values of the boundaries as needed.

As for the detailed structure, application principle, function and efficacy of the present invention, A complete understanding can be obtained by referring to the following descriptions made with the drawings:

Referring to FIG. 2, it can be seen that the method of the present invention mainly includes: a "photographing device for taking a picture containing a bar code" S21 step, a "whether the bar code is completely identifiable" S22 step, and an "analysing bar code content" P1 program, a "photographing device integrates the boundary value to form an auxiliary image capturing prompt" S27 step, a "image capturing range covers all patterns" S28 step, a "photographing image" S29 step, and a "providing operation" "S30", "Improve the angle and position of the photographic device according to the operation suggestion" step S31; and the "Analyze Barcode Content" P1 program includes: "Get the anchor point from the barcode and a reference length" Step S23 A step S24 of "taking a direction angle reference line from the bar code", a step S25 of "analysing the image range information in the barcode", and a step of "calculating the image boundary value" S26.

The above steps are described in sequence. First, the "photographing device for image capturing a barcode" step S21 is performed by an arithmetic processing unit (such as a mobile phone, an iPad, a computer with a camera function or other mobile device). The photographic device captures a pattern having a barcode (which can be a two-dimensional barcode), wherein the barcode has information about the image capture range that can be generated after interpretation; and then a "barcode is complete and identifiable" S22 In the judgment step, if the judgment result is negative "N", the "photographing device is repeated for one package" In the step S21, the image containing the barcode is taken. If the result of the determination is affirmative "Y", the "analyze barcode content" P1 program is executed.

In the "Analyze Barcode Content" P1 program, a step of "taking an anchor point from the bar code and at least one reference length" S23 and a step of "obtaining a direction angle reference line from the bar code" S24 are used to be used in the bar code. The image capturing range information defines the basic information required for the positioning point, the reference length, and the direction angle reference line, and then executes the "resolving the image capturing range information in the barcode" step S25 and "calculating the boundary value of the image capturing" S26. In the step, the operation processing unit calculates the boundary values required for the image capturing according to the image capturing range information, and can perform distortion correction as needed to correct the image distortion caused by the angle tilt or other reasons to obtain the correct image. The value of each boundary.

In the following, two representative embodiments are used to illustrate the application of the above-mentioned "analysing bar code content" P1 program in different forms of image capturing: as shown in FIG. 3, it is a widely used QR code. The application aspect mainly includes: a pattern area 1 and a barcode area 2 disposed on the carrier 3, wherein the pattern area 1 can be a pattern, a character, a symbol, etc., and the barcode area 2 has a complex number at a local end angle a positioning portion, and at least one image capturing range information for reading and recognizing (ie, a portion of the bar code region 2 except for each positioning portion, which is composed of a plurality of densely arranged cell points), the image capturing range information may be generated by at least partial The positioning portion is information on the image capturing shape and the boundary value extending toward the respective circumferential sides.

The bar code area 2 is a QR code, and is characterized in that a first positioning part 211 (upper right), a second positioning part 221 (upper left) and a third positioning are respectively disposed at the partial three end corners of the bar code area 2. a portion 231 (bottom left), and a plurality of densely arranged cell points (ie, the image capturing range information portion), and first, second, and third are respectively disposed at the center of the first, second, and third positioning portions 211, 221, and 231 Positioning points 21, 22, 23, and using the first, second, and third positioning points 21, 22, 23 as two adjacent reference edges, thereby defining a (horizontal or vertical) direction angle reference line And further confirming the direction of the bar code area 2, top, bottom, left, right, etc.; or using one side of the bar code area 2 as a reference side to form a (horizontal or vertical) direction angle reference line, such There are many kinds of positioning methods, and their development is extremely mature. Therefore, in practical applications, the directions of the up, down, left, and right directions can be separately defined in other ways.

The boundary value of the image capturing range information is a relative size that can be calculated in many ways; for example, the first positioning portion 211 (or one of the second positioning portion 221 and the third positioning portion 231) The width is used as a reference length (the width of each cell point of the barcode area 2 can also be used as a standard length), and then the different reference parameters are multiplied by the reference length to obtain the required relative sizes (ie, the boundaries). The value, as shown in the figure, the first, second, third, and fourth dimensions a, b, c, and d) may be defined by the first positioning point 21 extending away from the second positioning point 22 in a practical application. Two dimensions b, facing away from the first by the second positioning point 22 The positioning point 21 extends a first dimension a, a second dimension c extends from the second positioning point 22 toward the third positioning point 23, and a third positioning point 23 extends away from the second positioning point 22. A fourth dimension d, whereby a (rectangular) imaging range 30 comprising at least the pattern area 1 is definitively defined on the carrier 3.

In the above structure, except that a reference length can be generated in the above manner; it can also use the connection distance of the first and second positioning points 21, 22 (or the connection distance of the second and third positioning points 22, 23) as A reference length can be adjusted only for each proportional parameter, and the same definition effect can be achieved; at the same time, the image capturing range of other shapes (such as a square) can be defined by this method.

As shown in FIG. 4, it is an application aspect of an Aztec code, which mainly includes: a pattern area 1 and a barcode area 2a disposed on a carrier 3a, wherein the pattern area 1 can be a pattern or a text. The bar code area 2a may be a two-dimensional bar code having a structural feature of the single positioning portion 24a or other bar code having an approximate structure, and at least one image capturing range information for recognizing the identification (ie, the bar code area 2a is apart from the positioning portion 24a) The image forming range is composed of a plurality of densely packed cell points, and the image capturing range information generates information on the image capturing shape and the boundary value extending from the partial portion of the positioning portion 24a toward the respective circumferential sides.

Since the barcode area 2a is an Aztec code, the feature has a positioning portion 24a at the central portion, and a plurality of densely arranged cell points. (ie, the image capturing range information portion), and an positioning point 241a can be taken on the positioning portion 24a (center), and one side of the barcode area 2a can be used as a reference side to define a (horizontal or vertical) direction. Angle reference line.

The boundary value of the image capturing range information portion is a relative size that can be calculated in many ways; for example, the width x on the side of the positioning portion 24a (or the width y on the side of the barcode region 2a) is used as a Reference length (may also be the width of each cell point of the bar code area 2 as a standard length), and then multiply the different reference parameters by the reference length (x or y) to obtain the required relative sizes (ie, each The boundary value, such as the relative size e and the image size f) in the figure.

At the same time, the image capturing range information portion further defines a center point 301b of the image capturing range, the center point 301b is located at a relative size e from the positioning point 241a and has a relative angle h. In the embodiment, the relative angle is h is about 45 degrees, that is, the center point 301b has an angle of 45 degrees with the (horizontal) direction angle reference line of the center point 241a, and can be extended from the image capturing center point 301b to the entire circumference. f, whereby a (circular and skewed) image capturing range 30b comprising at least the pattern region 1 is defined on the carrier 3b.

In this embodiment, the relative position of the positioning point 22b and the center point 301b is defined in a polar coordinate manner. However, in practical applications, the relative position of the positioning point 22b and the center point 301b may also be defined by a rectangular coordinate method; In this way, other shapes can be defined (eg : Polygon, multi-angle star).

Through the above-mentioned "analysis bar code content" P1 program generated boundary value (which can form an image capturing range), and then a "photographing device integrates the boundary value to form an auxiliary image capturing prompt" S27 step, by the photo After the device introduces each boundary value, an auxiliary image capturing action can be generated on the camera device, and the prompt action can be a voice prompt for guiding the up, down, left, and right operations, or a photo. The arrow of the up, down, left, and right operations is displayed on the display screen of the device (or a frame of the image capturing range is displayed), so as to achieve the effect of assisting the operator to take the image; and then determining whether the image capturing range covers all the patterns. In the step, the internal automatic control system of the operator or the camera device confirms whether the image capturing range of the current image completely covers all the patterns. If the result is a positive "Y", the photographing operation is completed by a "photographing imaging" step S29; If the result is negative "N", then a "providing operation suggestion" step S30 is performed in sequence, and a "correction of the angle and position of the photographic device according to the operation suggestion content" S31 step is performed by the operation processing. The operation instruction of the auxiliary image capturing device is generated on the photographic device, and the operation suggestion may be a voice prompt for guiding the up, down, left, right, zooming, and zooming operations, or displaying on the photographic device. On-screen display of up, down, left, right, zoom in, zoom in the operation of the graphic text (or display a frame of the image range), or generate a control signal to the automatic control system in the camera to control the lens The shift of the lower, left, and right or the focal length of the lens, so that the operator or the automatic control system can correct the photo mount according to the operation suggestion. The angle and position are set, and then the above-mentioned "photographing device for image capturing of a bar code" step S21 is repeated until the image capturing operation is correctly completed.

As can be seen from the above, the method for quickly setting the image capturing range of the present invention does have the functions of simplifying the image capturing process, easy identification operation, and improving the overall identification efficiency, and has indeed been industrially utilized, novel, and progressive.

The above description is only a preferred embodiment of the invention and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention.

S11‧‧‧Photographic device for image capture

S12‧‧‧ visually judge whether the photographing range covers all the patterns

S13‧‧‧Photography

S14‧‧·Is the imaging content indeed covering all the patterns?

S15‧‧‧Revising the angle and position of the camera

S21‧‧‧Photographic device for imagery containing a barcode

Whether the S22‧‧‧ barcode is complete and identifiable

S23‧‧‧Get the anchor point and at least one reference length from the barcode

S24‧‧‧Get a direction angle reference line from the bar code

S25‧‧‧ Analysis of the image range information in the barcode

S26‧‧‧ Calculate the boundary value of the image taken

S27‧‧‧Photographic device integrates the boundary values to form a reminder for auxiliary imaging

Whether the image range of S28‧‧‧ covers all the drawings

S29‧‧‧Photography

S30‧‧‧ Provide operational advice

S31‧‧‧Revising the angle and position of the camera according to the recommendations

P1‧‧‧Analysis of bar code content

Figure 1 is a schematic diagram showing the operation of ingesting a specific area pattern.

Figure 2 is a flow chart showing the operation of the present invention.

Figure 3 is a diagram showing one possible embodiment of the program for analyzing bar code contents in the present invention.

Figure 4 is a diagram showing another possible embodiment of the program for analyzing bar code contents in the present invention.

S21‧‧‧Photographic device for imagery containing a barcode

Whether the S22‧‧‧ barcode is complete and identifiable

S23‧‧‧Get the anchor point and at least one reference length from the barcode

S24‧‧‧Get a direction angle reference line from the bar code

S25‧‧‧ Analysis of the image range information in the barcode

S26‧‧‧ Calculate the boundary value of the image taken

S27‧‧‧Photographic device integrates the boundary values to form a reminder for auxiliary imaging

Whether the image range of S28‧‧‧ covers all the drawings

S29‧‧‧Photography

S30‧‧‧ Provide operational advice

S31‧‧‧Revising the angle and position of the camera according to the recommendations

P1‧‧‧Analysis of bar code content

Claims (11)

A method for quickly setting a image capturing range, comprising at least: a step of "photographing a picture for a picture containing a bar code" by taking a picture of a bar code pattern by a camera device of an arithmetic processing unit And the bar code has the image capturing range information that can be generated after being interpreted; and the “analysing bar code content” program, the arithmetic processing unit analyzes the image capturing range information in the bar code, and obtains the image by calculation The required boundary values; a step of "integrating the boundary value of the photographic device to form an auxiliary image capture" step, after the camera device introduces the boundary values, an auxiliary image capturing action is generated; If the image capturing range covers all the patterns, the determination step is to confirm whether the image capturing range is complete. If the result is negative "N", repeat the above steps of "photographing device for image capturing a barcode" step; In the imaging step, if the result of the above-mentioned "whether the image capturing range covers all the patterns" is affirmative "Y", the photographing action is completed. The method for rapidly setting a image capturing range according to the first aspect of the patent application, wherein the auxiliary image capturing prompt is a voice prompt. The method for quickly setting a image capturing range according to claim 1, wherein the photographic device has a display screen and the auxiliary image capturing The prompt is an image prompt displayed on the display screen. For example, the method for quickly setting the image capturing range according to the first aspect of the patent application, wherein if the result of the "taking the image capturing range covers all the patterns" is negative "N", then a "providing operation suggestion" is executed first. In the step, the step of "taking the image device for a picture containing a barcode" is repeated. The method for quickly setting a image capturing range as described in claim 4, wherein the operation suggestion is a voice suggestion. The method for quickly setting a image capturing range as described in claim 4, wherein the photographic device has a display screen, and the operation suggestion is an image suggestion displayed on the display screen. The method for rapidly setting the image capturing range as described in claim 4, wherein the auxiliary image capturing prompt is a lens control signal. The method for quickly setting the image capturing range as described in claim 4, wherein the "providing operation suggestion" step and the "photographing device for image capturing a barcode" step are further provided with a "dependency" This operation suggests a step of modifying the angle and position of the camera. The method for quickly setting a image capturing range according to the first aspect of the patent application, wherein after the step of "photographing a image for a barcode-containing pattern" step, performing a "step of whether the barcode is completely identifiable" determining step, If the result of the determination is negative "N", the step of "taking the image device for image capturing a barcode" is repeated, and if the result of the determination is affirmative "Y", then Execute the "Analyze Barcode Content" program. The method for quickly setting a image capturing range according to the first aspect of the patent application, wherein the "analysing bar code content" program includes at least a step of "obtaining an anchor point from the bar code and at least one reference length" and a "by bar code" The step of obtaining a direction angle reference line is used to define the positioning point, the reference length and the direction angle reference line respectively by the image capturing range information in the barcode. The method for quickly setting a image capturing range according to the first aspect of the patent application, wherein the "analysing bar code content" program further comprises a step of "analysing the image capturing range information in the bar code" step, and a "calculating the image capturing boundary" In the numerical step, the arithmetic processing unit calculates the boundary values required for image acquisition according to the image capturing range information.