TWI485633B - Method for selecting balls by image recognition - Google Patents

Description

Sphere selection method using image recognition

The invention relates to a sphere screening method, in particular to a sphere sorting method using image recognition.

Inspecting the Republic of China Application No. 7322056, the bead roundness sorting machine is composed of a feeding device, an inspection device and a dispensing device, and the inspection device includes another DC gear motor under the inlet of the feeding box. a rotating flat disk, and a governor that controls its rotational speed, while having a blocking piece on the inner edge of the disk, and an inclined guiding piece in front of the leakage hole of the feeding box, in the circle The inner fork of the disc is horizontally placed on the other guiding piece, and the beads on the disc are respectively guided, and are sequentially inspected and separated.

Another method of sorting another sphere sorting machine is to select a light-emitting unit to illuminate the light on the sphere, so that the sphere generates a reflected light received by the light-receiving unit, and then compares the light intensities by setting the two. The difference is high or low to determine whether the surface of the sphere has flaws for sorting. For example, when the difference between the two is higher than the preset range, it is determined that the surface of the sphere has flaws.

However, whether it is to separate the spheres by means of mechanical sorting or to separate the spheres by means of optical alignment, only the spheres can be selected as either qualified or unqualified. Therefore, the above two sphere sorting methods cannot provide effective The data is used to improve the analysis, prediction and evaluation of the sphere's production process, and to accurately correct the sphere's production process.

Therefore, how to develop a sphere screening method capable of solving the above problem is the research engine of the present invention.

It is an object of the present invention to provide a sphere sorting method using image recognition, which is mainly capable of accurately correcting the production process of a sphere.

In order to achieve the foregoing object, a sphere selection method using image recognition according to the present invention includes: a sphere transporting step: transporting the sphere to a transport device, so that the sphere has a first exposed Ball surface; first taking image capturing step: capturing and storing an image of the first ball surface of the ball by a first photographing device; image matching step: performing image of the first ball surface of the sphere and image data of the database Comparison, in order to establish qualified spheres, unqualified spheres and information on the types of unqualified spheres.

Preferably, in the step of transporting the sphere, the surface of the sphere is divided into at least a first spherical surface and a second spherical surface, and the first spherical surface is exposed to the outside; the first photographing and taking step further has a ball rotation step and a second image capturing step, wherein the ball rotation step rotates the ball by the conveying device to expose the second surface; the second imaging taking step is performed by a first The photographic device captures an image of the surface of the second ball of the sphere; and the image matching step compares the image of the first spherical surface and the second spherical surface of the sphere with the image data of the database.

Preferably, in the ball transporting step, the conveying device is made of a light transmissive material, and at least one light source unit is provided for providing a light source for illuminating the conveying device, so that the first and second photographic devices capture the light source unit. The image of the first and second spheres of the sphere is clearer.

Preferably, after the image matching step, there is a ball outputting step of controlling the falling direction of each of the spheres according to the result of the image matching step.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

Referring to FIG. 1 , it is a block diagram of the present invention. The method for selecting a sphere using image recognition is mainly provided by a sphere conveying step 11 and a first taking image capturing step 12 . A sphere rotation step 13, a second image capture step 14, an image comparison step 15 and a sphere output step 16 are achieved, wherein: the sphere delivery step 11: refer to FIG. 2, which is a partial schematic view of the present invention. The ball 20 is transported to a conveying device 30, and the surface of the ball 20 is divided into a first spherical surface 21 and a second spherical surface 22, and the first spherical surface 21 is exposed; wherein the conveying device 30 can be A chassis 31 having a rolling groove 311 and a rotatable rotatable 32 provided on the chassis 31, and the rotating plate 32 can be rotated by a specific rotation and provided with a plurality of pushing holes 321 corresponding to the rolling grooves 311. Each of the push holes 321 is in a shape of an upper width and a lower width, and the single push hole 321 is received by the single ball 20, and a part of the ball 20 is exposed outside the push hole 321 after being accommodated. It is in contact with the rolling groove 311. In addition, in order to make the drawing easy to understand, the second drawing is to draw the circularly-arranged push-out holes 321 in a planar shape, and the other parts corresponding to the push-out holes 321 are drawn together.

The first photographing and capturing step 12: capturing an image of the first spherical surface 21 of the spherical body 20 by a first photographing device 41; wherein the first photographing device 41 is a general camera, and the first photographing device 41 The first position 51 refers to the action of storing and storing the first ball surface 21 of the ball 20, and the first position 51 refers to the push hole 321 corresponding to the turntable 32 and the first ball surface of the ball 20 21 is exposed to the outside position.

The ball rotating step 13: the ball 20 is rotated by the conveying device 30 to expose the second surface 22, and in this embodiment, the turntable 32 of the conveying device 30 is controlled to rotate by an angle, by the ball 20 The rotation of the turntable 32 and the partial ball 20 are in contact with the rolling groove 311 of the chassis 31, so that the rotated turntable 32 can drive the ball 20 in the push-out hole 321 and roll along the rolling groove 311. The second ball surface 22 of the sphere 20 is exposed to the outside.

The second imaging taking step 14 is to capture an image storing the second spherical surface 22 of the sphere 20 by a second photographing device 42; wherein the second photographing device 42 is a general camera, and the second photographing device 42 The second position 52 is configured to perform image capturing and storing of the second ball surface 22 of the ball 20, and the second position 52 refers to the pushing hole 321 of the turntable 32 corresponding to an angle of rotation and the ball 20 The second ball surface 22 is exposed in an outer position.

The image matching step 15: comparing the images of the first spherical surface 21 and the second spherical surface 22 of the spherical body 20 that are captured and stored with the image data of the database, thereby establishing a qualified sphere, a defective sphere, and a failure. Information on the type of sphere.

The sphere outputting step 16: controlling the falling direction of each of the spheres 20 according to the result of the image matching step 15, thereby distinguishing the qualified sphere, the unqualified sphere with the scratched flaw, and the unqualified sphere with the dirty flaw. Etc., in order to deal with the unqualified spheres.

The above is the description of the main steps of the embodiment of the present invention.

Accordingly, the present invention can not only select the two types of spheres that are qualified or unqualified, but also the parts of the unqualified spheres, and the steps of photographing and image matching, etc., can be performed for the unqualified spheres. More careful selection of distinctions, such as scratches, dirt, etc., to establish the data of the sphere lot number, and to provide effective data for improved analysis, prediction and evaluation of the sphere's production process, so that the invention can be achieved The purpose of accurately correcting the production process of the sphere.

In addition, the present invention can also achieve the purpose of accurately correcting the production process of the sphere by performing a single image capturing step, and comparing with the image data of the database, and of course, the sphere can be more than twice. Taking the image and the comparison analysis after taking the image, the more images taken, the more accurate the data created after the comparison analysis, and the reference material for correcting the production process.

It is to be noted that, in the third embodiment, at least one light source unit 60 is disposed on the side of the turntable 32 of the transport device 30. In this embodiment, two groups are taken as an example, and the light source unit 60 is a plurality of light sources. The second electrode (LED) 61 is composed of a turntable 32 made of a permeable material, and the light source unit 60 provides a light source to illuminate the turntable 32, so that the first and second photographic devices 41, 42 The image of the first and second spherical surfaces 21, 22 of the sphere 20 is more clearly photographed.

In the above, the embodiments and the drawings are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equal changes and modifications made by the scope of the patent application of the present invention should be It is within the scope of the patent of the present invention.

"this invention"

11. . . Sphere transport step

12. . . First capture step

13. . . Sphere rotation step

14. . . Second capture step

15. . . Image comparison step

16. . . Sphere output step

20. . . Sphere

twenty one. . . First ball surface

twenty two. . . Second ball surface

30. . . Conveyor

31. . . Chassis

311. . . Rolling groove

32. . . Turntable

321. . . Push hole

41. . . First photographic device

42. . . Second photographic device

51. . . First position

52. . . Second position

60. . . Light source unit

61. . . Light-emitting diode

Figure 1 is a block flow diagram of the present invention.

Figure 2 is a partial schematic view of the present invention showing the state of the conveyor, the ball and the first and second photographic devices.

Fig. 3 is another partial schematic view showing the state in which the light source unit is provided.

11. . . Sphere transport step

12. . . First capture step

13. . . Sphere rotation step

14. . . Second capture step

15. . . Image comparison step

16. . . Sphere output step

Claims (4)

A ball sorting method using image recognition, comprising: a ball conveying step: conveying the ball to a conveying device, wherein the conveying device is a chassis having a rolling groove and a rotatable rotating plate disposed on the chassis, The turntable can be rotated by a specific rotation and the ring is provided with a plurality of push holes corresponding to the rolling grooves. The single push hole is for a single ball to be accommodated, and a part of the ball is exposed outside the push hole after being accommodated. And contacting the rolling groove, and the ball has a first spherical surface exposed outside, the first spherical surface is visible by the pushing hole; the first shooting taking step: by using a first photographing device Shooting an image storing the surface of the first ball of the sphere; the image matching step: comparing the image of the first ball surface of the spherical object stored and stored with the image data of the database, thereby establishing a qualified sphere, a defective sphere, and a defective sphere Type of information. The method for selecting a sphere for image recognition according to claim 1, wherein in the step of transporting the sphere, the surface of the sphere is divided into at least a first spherical surface and a second spherical surface, and the first spherical surface Exposed to the outside; the first imaging taking step further has a sphere rotating step and a second capturing step, wherein the sphere rotating step rotates the sphere by the conveying device to expose the second surface to the second surface The second imaging taking step captures an image storing the second spherical surface of the sphere by a second photographing device; 8 the image matching step is to capture the stored first spherical surface and the second sphere of the sphere The images on the surface are compared with the image data of the database. The method for selecting a sphere for image recognition according to claim 2, wherein in the sphere conveying step, the conveying device is made of a light transmissive material, and at least one light source is provided for illuminating the conveying. The light source unit of the device makes the first and second photographic devices capture the images of the first and second spherical surfaces of the sphere more clearly. The method for selecting a sphere for image recognition according to claim 1 or 2, wherein after the image matching step, there is a sphere output step, which controls each sphere according to the result of the image comparison step. The fall of the game.