TWI482942B - System and method for displaying various scales of coordinate graphs under various magnification - Google Patents

Description

Multi-form scale marking system and method under multiple rate

The invention relates to an image measuring system and method, in particular to a multi-scale scale marking system and method under multiple magnification.

Image measurement is the most widely used measurement method in the field of precision measurement. This method not only has high precision, but also has fast measurement speed. Image measurement is mainly used to measure the dimensional difference and shape error of parts or components, which plays an important role in ensuring product quality.

The image measurement method uses a lens with a high-resolution Charged Coupled Device (CCD) to obtain an image of a test workpiece or component through an image capture card. The measurement method has many precise measurements on the workpiece or the component. Achieving high precision.

However, in the previous image processing, the image of the obtained test workpiece does not display the scale, and the user cannot visually see the size of the test workpiece.

In view of the above, it is necessary to propose a multi-scale multi-scale scale marking system and method, which can select different magnifications and different scale forms to measure the workpiece when measuring the workpiece, and can more accurately measure the characteristics of the test workpiece. Displaying the scale on the image of the test workpiece, and also visually seeing the size of the measurement feature, which is convenient for the user to view Check and analyze the workpiece size.

A multi-scale multi-scale scale marking system, the system comprising: a setting module for setting a magnification of the lens; and a calculation module for calculating a unit primitive of the image of the test workpiece captured by the CCD according to the set magnification of the lens a reading module for reading an image of the test workpiece from the image capture card; selecting a module for selecting a scale according to a user's requirement, and calculating the scale form by using the unit primitive length The scale value; the overlay module is used to superimpose the user-selected scale form and the image of the test workpiece to obtain a superimposed image.

A multi-scale multi-form scale marking method, the method comprising the steps of: setting a magnification of a lens; calculating a unit primitive length of an image of a test workpiece photographed by the CCD according to a magnification of the set lens; reading the test from the image capture card The image of the workpiece; the scale form is selected according to the user's needs, and the scale value of the scale form is calculated through the length of the unit primitive; the scale form selected by the user and the image of the test workpiece are superimposed to obtain a superimposed image.

Compared with the prior art, the multi-scale multi-scale scale marking system and method provided by the invention select different magnifications and different scale forms to measure the workpiece when measuring the workpiece, and can more accurately measure the test. The characteristics of the workpiece, the scale is displayed on the image of the test workpiece, and the size of the measurement feature can be visually seen, which is convenient for the user to observe and analyze the workpiece size.

1‧‧‧ computer

2‧‧‧Image measuring machine

3‧‧‧CCD

4‧‧‧ lens

5‧‧‧Testing the workpiece

6‧‧‧ display

10‧‧‧Image Capture Card

11‧‧‧Multi-scale scale marking system

110‧‧‧Setup module

120‧‧‧Computation Module

130‧‧‧Reading module

140‧‧‧Selection module

150‧‧‧Overlay module

160‧‧‧ display module

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a hardware architecture diagram of a preferred embodiment of a multi-format scale marking system at multiple magnifications in accordance with the present invention.

Figure 2 is a functional block diagram of the multi-format scale marking system at multiple magnifications in Figure 1.

3 is a flow chart showing the implementation of a preferred embodiment of the multi-format scale marking method at multiple magnifications of the present invention.

Fig. 4 is a schematic view showing the image of the test piece with the scaleless form of the present invention.

Figure 5 is a schematic illustration of an image of a test workpiece in the form of a standard scale of the present invention.

Figure 6 is a schematic view of an image of a test workpiece in the form of a square scale of the present invention.

Fig. 7 is a schematic view showing the image of a test workpiece in the form of a circular scale according to the present invention.

Referring to Figure 1, there is shown a hardware architecture diagram of a preferred embodiment of the multi-format scale marking system of the multi-rate of the present invention. The multi-format scale marking system is applied to the computer 1 at multiple magnifications. The computer 1 is connected to an image measuring machine 2 on which a test workpiece 5 is placed. A charge coupled device (CCD) 3 for collecting continuous images is mounted on the Z-axis of the image measuring machine 2, and the CCD 3 is connected with a lens 4, and the CCD 3 can be coupled with the lens 4 The test workpiece 5 is imaged; a light-emitting device (not shown) is mounted on the Z-axis of the image measuring machine 2, and the light-emitting device is used to provide an image light source for imaging the test workpiece 5. The illuminating device can be a lamp tube and any suitable illuminant capable of providing a light source.

The computer 1 is equipped with an image capture card 10 and a multi-format multi-format scale marking system 11. The CCD 3 is connected to the image capturing card 10 through an image data line, and the image of the test workpiece 5 acquired from the image measuring machine 2 is transmitted to the image capturing card 10, and can be displayed and connected to the computer 1. On the display 6. The multi-scale multi-format scale marking system 11 is connected to the lens 4, and is mainly used for controlling the lens 4, adjusting the magnification of the lens 4, and processing the image of the test workpiece 5 in the image capturing card 10. To display the image of the processed test piece 5 on the display 6 Come. The multi-scale multi-format scale marking system 11 will be described in detail in Figures 2 and 3.

Referring to FIG. 2, it is a functional module diagram of the multi-format scale marking system 11 at multiple magnifications in FIG. Each of the modules referred to in the present invention is a program segment for performing a specific function in the multi-format multi-format scale indicator system 11 at a multi-rate, which is more suitable for describing the execution process of the software in the computer than the program itself, and thus the present invention is applicable to the software. The descriptions are all described in modules.

The multiple-format multi-form scale marking system 11 mainly includes: a setting module 110, a computing module 120, a reading module 130, a selection module 140, a superimposing module 150, and a display module 160.

The setting module 110 is configured to set the lens 4 magnification. In the preferred embodiment, the magnification of the lens 4 is one to six times, and each magnification corresponds to one number. For example, the magnification of the multiple corresponds to one, the magnification of the second is two, and so on. The six-fold magnification corresponds to a number of six. The user only needs to input the corresponding number to conveniently set the magnification of the lens 4. When the user sets the number, the lens 4 automatically adjusts to the magnification corresponding to the number.

The calculation module 120 is configured to calculate a unit primitive length of the image of the test workpiece captured by the CCD 3 according to the magnification of the lens 4 set by the user. The unit primitive length refers to the length value of each primitive in the unit distance. Specifically, the unit length is 0.1 mm, and the number of primitives in the unit length in the image of the test workpiece captured by the CCD 3 is 5, the unit element length is 0.02 mm. The unit length is different under different magnifications. For example, under the magnification of six times, the number of primitives is less than the magnification of the primitive, so the unit length of the magnification of six times is more than the unit of magnification. The length of the primitive is large.

The reading module 130 is configured to read an image of the test workpiece 5 . Specifically, the reading module 130 reads the image of the test workpiece acquired by the CCD 3 from the image capturing card 10.

The selection module 140 is configured to select a scale form according to a user's requirement, and calculate a scale value of the scale form by using the unit primitive length.

The scale forms include a scaleless form, a standard scale form, a square scale form, and a circular scale form.

The unscaled form means that the scale value is not indicated in the horizontal axis and the vertical axis of a coordinate system. As shown in FIG. 4, the scaleless form is used to display the image size of the test workpiece 5.

The standard scale form means that both the horizontal axis and the vertical axis of a coordinate system are marked with a scale value, as shown in FIG. 5, which is used to align the width and height of the test workpiece 5.

The square scale form means that both the horizontal axis and the vertical axis of a coordinate system are marked with a scale value, and further includes a plurality of horizontal and vertical axes without scales, forming a square table, as shown in FIG. The square scale form is used to align the area occupied by the test workpiece 5.

The circular scale form means that both the horizontal axis and the vertical axis of one coordinate system are marked with a scale value, and further includes a circle diffused by a fixed radius, as shown in FIG. The roundness and diameter of the test piece 5 are measured.

The superimposing module 150 is configured to superimpose the scale form selected by the user and the image of the test workpiece 5 to obtain a superimposed image. The superposition is performed by placing the image of the test workpiece 5 at the bottom layer and placing the scale selected by the user on the uppermost layer to obtain a superimposed image. As shown in Figure 4 to Figure 7.

The manner of calculating the scale value of the scale form is as follows: the center of the image of the test workpiece is centered, the left side of the horizontal direction is a negative scale, the right side of the horizontal direction is a positive scale, the vertical side is a positive scale, and the longitudinal lower side is a negative scale. Each scale contains a certain number of primitives (for example, 17 primitives), each scale value being 17*0.02=0.34 mm. As shown in FIGS. 4 to 7, each scale in the drawing represents 0.34 mm. For example, the horizontal right front scale "1" in Fig. 5 indicates 0.34 mm, and the horizontal right positive scale "2" indicates 0.68 mm.

The display module 160 is configured to display the superimposed image on the display 6.

Referring to Figure 3, there is shown a flow chart of a preferred embodiment of the multi-format scale marking method of the present invention.

In step S10, the setting module 110 sets the magnification of the lens 4. In the preferred embodiment, the magnification of the lens 4 is one to six times, and each magnification corresponds to one number. For example, the magnification of the multiple corresponds to one, the magnification of the second is two, and so on. The six-fold magnification corresponds to a number of six. The user only needs to input the corresponding number to conveniently set the magnification of the lens 4. When the user sets the number, the lens 4 automatically adjusts to the magnification corresponding to the number.

In step S20, the calculation module 120 calculates the unit primitive length of the image of the test workpiece captured by the CCD 3 according to the magnification of the lens 4 set by the user. The unit primitive length refers to the length value of each primitive in the unit distance. Specifically, the unit length is 0.1 mm, and the number of primitives in the unit length in the image of the test workpiece captured by the CCD 3 is 5, the unit element length is 0.02 mm. The unit lengths are different under different magnifications. For example, under the magnification of six times, the number of primitives is less than the magnification of the multiple, so the unit length of the magnification of six times is smaller than the magnification of one magnification. The bitmap element length is large.

In step S30, the reading module 130 reads the image of the test workpiece 5. Specifically, the reading module 130 reads the image of the test workpiece acquired by the CCD 3 from the image capturing card 10.

In step S40, the selection module 140 selects the scale form according to the user's needs, and calculates the scale value of the scale form through the unit element length. The scale forms include a scaleless form, a standard scale form, a square scale form, and a circular scale form.

The unscaled form means that the scale value is not indicated in the horizontal axis and the vertical axis of a coordinate system. As shown in FIG. 4, the scaleless form is used to display the image size of the test workpiece 5.

The standard scale form means that both the horizontal axis and the vertical axis of a coordinate system are marked with a scale value, as shown in FIG. 5, which is used to align the width and height of the test workpiece 5.

The square scale form means that both the horizontal axis and the vertical axis of a coordinate system are marked with a scale value, and further includes a plurality of horizontal and vertical axes without scales, forming a square table, as shown in FIG. The square scale form is used to align the area occupied by the test workpiece 5.

The circular scale form means that both the horizontal axis and the vertical axis of one coordinate system are marked with a scale value, and further includes a circle diffused by a fixed radius, as shown in FIG. The roundness and diameter of the test piece 5 are measured.

The manner of calculating the scale value of the scale form is as follows: the center of the image of the test workpiece is centered, the left side of the horizontal direction is a negative scale, the right side of the horizontal direction is a positive scale, the vertical side is a positive scale, and the longitudinal lower side is a negative scale. Each scale Both contain a certain number of primitives (for example, 17 primitives), each scale value is 17*0.02=0.34 mm. As shown in FIGS. 4 to 7, each scale in the drawing represents 0.34 mm. For example, the horizontal right front scale "1" in Fig. 5 indicates 0.34 mm, and the horizontal right positive scale "2" indicates 0.68 mm.

In step S50, the superimposing module 150 superimposes the scale form selected by the user and the image of the test workpiece 5 to obtain a superimposed image. The superposition is performed by placing the image of the test workpiece 5 at the bottom layer and placing the scale selected by the user on the uppermost layer to obtain a superimposed image. As shown in Figure 4 to Figure 7.

In step S60, the display module 160 displays the superimposed image on the display 6.

It should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments thereof The technical solutions are modified or equivalently substituted without departing from the spirit and scope of the technical solutions of the present invention.

1‧‧‧ computer

2‧‧‧Image measuring machine

3‧‧‧CCD

4‧‧‧ lens

5‧‧‧Testing the workpiece

6‧‧‧ display

10‧‧‧Image Capture Card

11‧‧‧Multi-scale scale marking system

Claims (8)

A multi-scale multi-scale scale marking system, the system comprising: a setting module for setting a magnification of the lens; and a calculation module for calculating a unit primitive of the image of the test workpiece captured by the CCD according to the set magnification of the lens Length, the unit primitive length refers to the length value of each primitive in the unit distance; the reading module is used to read the image of the test workpiece from the image capture card; and the selection module is used according to the user's The demand selects the scale form, and calculates the scale value of the scale form through the unit element length; and the overlay module is configured to superimpose the user selected scale form and the image of the test workpiece to obtain a superimposed image. The multi-scale multi-scale scale marking system as described in claim 1, wherein the system further comprises a display module for displaying the superimposed image on the display. The multiple-format scale marking system according to the multi-rate of claim 1, wherein the scale form comprises a scaleless form, a standard scale form, a square scale form and a circular scale form. The multiple-format scale marking system according to the multi-magnification according to claim 1, wherein the superimposing method is to place the image of the test workpiece at the bottom layer and the user-selected scale form on the uppermost layer, thereby obtaining A superimposed image. A multi-scale multi-form scale marking method, the method comprising the steps of: setting a magnification of a lens; calculating a unit primitive length of an image of a test workpiece captured by the CCD according to a magnification of the set lens, wherein the unit primitive length is a unit The length value of each primitive within the distance; Reading the image of the test workpiece from the image capture card; selecting the scale form according to the user's needs, and calculating the scale value of the scale form through the unit element length; and selecting the scale form and the image of the test workpiece selected by the user Perform superposition to get a superimposed image. The multiple-format scale marking method according to the multi-rate of claim 5, wherein the method further comprises the step of displaying the superimposed image on the display. The multi-scale scale marking method according to the multi-rate of claim 5, wherein the scale form comprises a scaleless form, a standard scale form, a square scale form and a circular scale form. The multi-scale scale marking method according to the multi-rate according to claim 5, wherein the superimposing method is to place the image of the test workpiece at the bottom layer, and place the scale selected by the user on the uppermost layer, thereby obtaining A superimposed image.