KR101656712B1 - Apparatus and method for modifying position of reference posiiton mark - Google Patents
Apparatus and method for modifying position of reference posiiton mark Download PDFInfo
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- KR101656712B1 KR101656712B1 KR1020150044991A KR20150044991A KR101656712B1 KR 101656712 B1 KR101656712 B1 KR 101656712B1 KR 1020150044991 A KR1020150044991 A KR 1020150044991A KR 20150044991 A KR20150044991 A KR 20150044991A KR 101656712 B1 KR101656712 B1 KR 101656712B1
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Abstract
An example of an apparatus for correcting the position of a reference position marker includes an image obtaining unit for taking an image of an object having a reference position marker and generating an image of the object, A candidate for the effective preliminary reference position marker candidate for the reference position marker is selected from the photographed image applied from the image acquiring unit, and a final reference position marker candidate is selected from the selected candidate preliminary reference position marker candidate A final reference position marker candidate is selected, a final reference position marker is determined by comparing information on a final reference position marker candidate of the final reference position marker candidate group and information on a reference position marker, Comparing the current position with a reference position of the reference position marker, An operation controller for adjusting the current position of the chi-marker to the reference position, and a storage unit for storing information on the reference position marker having a distance between two reference position markers and an angle formed by the two reference position markers .
Description
The present invention relates to an apparatus and method for correcting the position of a reference position marker.
Most image processing systems acquire an image of a target object using a photographing device such as a camera, process the acquired image in a desired manner, and determine a correction operation or desired information for the acquired image.
In this way, when processing the acquired image, accurate position information of the acquired image is required.
Various methods are used to obtain position information in the image processing system depending on whether the position of the photographing apparatus is changed or not and whether the position of the object is changed or not.
For example, when an image is acquired through air or satellite equipment, the object to be photographed is fixed, but the position of the photographing apparatus for acquiring the image changes with time.
When the position of the photographing apparatus changes with time, position information of the photographing apparatus is required when the image is acquired in order to calculate the position information of the image obtained through the photographing operation of the photographing apparatus.
On the other hand, in a photographing apparatus such as CCTV or MRI, the position of the photographing apparatus is fixed, but the position of the object to be photographed is not constant but variable.
In this way, in order to calculate the positional information of the object whose position is not fixed, the position of the object is aligned with the already known reference position and then the photographing operation is performed.
For example, when a DNA chip (DNA chip) having thousands to hundreds of thousands of DNAs attached to a glass plate or a silicon plate of a predetermined size is taken to acquire an image, the user sets the position of the DNA chip at the reference position After adjustment, the DNA chip is photographed.
As such, since the user must manually adjust the position of the DNA chip to the reference position at each photographing, it takes a lot of time and cost.
In order to reduce such an economical cost wastage, a method of calculating the positional information of an object by using a reference position marker after taking a predetermined reference position marker together with a target object is used.
However, there is a problem that the reference position marker is not correctly recognized according to the accuracy of the captured image of the reference position marker, or the wrong position is recognized as the reference position marker.
SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art.
According to an aspect of the present invention, there is provided an apparatus for correcting a position marker of a reference position marker, the apparatus comprising: an image obtaining unit for capturing an object having a reference position marker and generating an image of the object; And a final reference position marker candidate group having a final reference position marker candidate in the selected valid spare reference position marker candidate group is selected from among the candidates of the final reference position marker candidate, The final reference position marker candidate is compared with the information about the final reference position marker candidate and the information about the reference position marker to determine the final reference position marker and the comparison between the current position of the final reference position marker and the reference position of the reference position marker To adjust the current position of the final reference position marker to the reference position Includes the operation controller, and stores information on the two standard position marker distance, two standards the reference position marker having a value of the angle forming between the marker position and stored in portions.
Wherein the operation control section judges the pixel group having a plurality of pixels arranged in the row direction and the column direction with the tone value already set in the captured image and arranged in the row direction and the column direction and judges the determined pixel group as a plurality of preliminary reference position marker candidates A distance between each of the preliminary reference position marker candidates and each of the remaining preliminary reference position markers is calculated to calculate a distance related to each of the preliminary reference position marker candidates, A distance corresponding to the reference position marker corresponding to the preliminary reference position marker candidate is compared with a distance corresponding to each of the distances related to the reference position marker corresponding to each of the preliminary reference position marker candidates, , The candidate for each of the preliminary reference position markers The valid spare preliminary position marker candidate candidates are determined as a valid preliminary position position marker candidate that is a candidate of the reference position marker, To determine the effective preliminary reference position marker candidate group.
The operation control unit may determine the final reference position marker candidate group by deleting the effective preliminary reference position marker candidate group in which the same effective preliminary reference position marker is set as a candidate of the reference position marker different from the selected effective preliminary reference position marker candidate group .
The operation control unit may calculate, at the last reference position marker candidate of the final reference position marker candidate group, the distance between the assumed reference position marker, which is the information about the hypothetical reference position marker for each final reference position marker candidate, And the final reference position marker candidate belonging to the final reference position marker candidate group having the same information as the information about the reference position marker is determined as the final reference position marker
According to another aspect of the present invention, there is provided a method of correcting a position of a reference position marker, comprising: selecting an effective preliminary reference position marker candidate group for a reference position marker in an image to be imaged from an image acquisition unit; Selecting a final reference position marker candidate group having a reference position marker candidate, comparing information on a final reference position marker candidate of the final reference position marker candidate group with information on a reference position marker, and determining a final reference position marker candidate And comparing the current position of the determined final reference position marker with the reference position of the reference position marker to adjust the current position of the final reference position marker to the reference position.
Wherein the step of selecting the effective preliminary reference position marker candidates comprises: determining a pixel group having a plurality of pixels having tone values already set in the photographed image and arranged continuously in the row direction and the column direction; Calculating a distance between each of the preliminary reference position marker candidates and each of the remaining preliminary reference position markers to calculate a distance related to each of the preliminary reference position marker candidates, Comparing the distances related to the position marker candidates and the distances related to the reference position marker corresponding to the respective preliminary reference position marker candidates with the distances related to the reference position marker corresponding to the respective preliminary reference position marker candidates, Distance between the candidate position marker candidates calculated , Determining each of the preliminary reference position marker candidates as the effective preliminary reference position marker candidates that are candidates of the corresponding reference position marker and determining the effective preliminary reference position marker candidates in the plurality of preliminary reference position marker candidates, And judging the effective preliminary reference position marker candidate group by combining the effective preliminary reference position marker candidates that are candidates of the reference position marker.
In the step of selecting the final reference position marker candidate group, the valid preliminary position marker candidate group in which the same effective preliminary reference position marker is determined as a candidate of the reference position marker different from the selected effective preliminary reference position marker candidate group is deleted, It is preferable to determine the candidate group.
Wherein the step of determining the final reference position marker comprises determining a distance between the assumed reference position marker and the estimated reference position marker, which is the information about the assumed reference position marker for each final reference position marker candidate in the final reference position marker candidate of the final reference position marker candidate group, Comparing the information on the reference position marker with information on the calculated assumed reference position marker, and comparing the information on the reference position marker with the calculated reference position marker And determining a final reference position marker candidate as a final reference position marker candidate when the final reference position marker candidate group having the same information about the marker exists.
According to this aspect, the position marker corresponding to the reference position marker is determined in the photographed image, and the position of the determined reference position marker is moved to the reference position of the reference position marker.
Therefore, since the position adjustment operation to the reference position manually performed is automatically performed, cost and time are saved
If the determined number of the reference position markers does not coincide with the number of the reference position markers and a part of the determined reference position markers is not detected and the remaining final reference position marker candidates are used, The position marker is detected. This improves the accuracy of the position detecting operation of the reference position marker.
1 is a schematic block diagram of an apparatus for correcting the position of a reference position marker according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating an operation of a reference position marker position correcting apparatus according to an exemplary embodiment of the present invention.
FIG. 3 is an operation flowchart of a method for calculating information on an existing position marker in FIG.
FIG. 4 is a flowchart illustrating a method for generating a candidate candidate of an effective preliminary reference position marker in FIG.
5 is a view showing a position of a reference position marker used in a position correcting device of a reference position marker according to an embodiment of the present invention.
6 is a diagram showing a vector formed by the reference position marker shown in Fig.
7 (a) and 7 (b) are diagrams showing the values of angles formed by two vectors, respectively.
FIG. 8 is a view showing an example of a photographed image for a test train according to an embodiment of the present invention.
9A and 9B are diagrams showing examples of vectors formed by the final reference position marker candidate group, in which FIG. 9A is a diagram showing a vector formed in the first final reference position marker candidate group, 2 is a diagram showing vectors formed in the final reference position marker candidate group.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.
It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but it should be understood that there may be other elements in between do. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.
Hereinafter, an apparatus and method for correcting a reference position marker position according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, a reference position marker position correcting apparatus according to an embodiment of the present invention will be described in detail with reference to FIG.
An apparatus for correcting the position of a reference position marker according to an embodiment of the present invention includes an image obtaining unit 11, an
The
The
The
By the operation of the
The
The
In this example, the
The
The corresponding image according to the control operation of the
Next, with reference to Fig. 2, the control operation of the position correcting device for a reference position marker having such a structure will be described.
In this example, an image captured by the
However, the present invention is applied not only to inspection samples such as blood and DNA but also to inspection objects for judging whether defects such as semiconductor devices or electronic parts are defective or other objects on which reference position markers are located, Is adjusted to a reference position using a reference position marker.
When the operation of the position correcting device of the reference position marker is started, the
The
Next, the
First, with reference to FIG. 3, the operation of the
The operation of calculating and storing the information about the reference position markers P1-Pn is performed by changing at least one of the position and the number of the reference position markers P1-Pn so that the information of the reference position markers P1-Pn is changed Every time.
5, the inspection tray T11 is provided with a plurality of grooves H11 and H12 containing desired inspection specimens. At this time, the grooves H11 function as reference position markers P1-Pn And the other groove (H12) is the groove containing the test sample.
In the case of FIG. 5, the number of reference position markers P1-P4 (n = 4) is four, but the number and position of these reference position markers P1-P4 are changed as necessary.
The groove H11 functioning as the reference position marker P1-P4 is expressed in the same color (e.g., white) as when the inspection food according to the inspection result at the time of photographing by the
In this embodiment, as an example, the case where the reference position markers P1 to P4 are located at the corresponding positions of the inspection tray T11 as shown in Fig. 5 will be described as an example.
The
Then, each pixel group made up of pixels in which pixels having a set gradation value (e.g., 255) in the reference image having a plurality of pixels are arranged continuously in the row direction and the column direction are determined, It is determined that each of the reference position markers P1 to P4 is located at a position where each pixel group is located and the image in which the reference position markers P1 to P4 are positioned in the reference image is determined to be the reference position markers P1 to P4 (S22).
Next, the center position (x n ) of the pixel located in the middle of the pixels arranged in the row direction and the center (x n ) of the pixels arranged in the column direction of the center of the corresponding pixel group with respect to the determined reference position markers P1- (Y n ) of the pixel located at the position (x n , y n ) is determined as a position with respect to each of the reference position markers P1-P4 and stored in the storage unit 22 (S23).
When the position of each reference position marker P-P4 is determined, the
6, the vector formed with reference to the first reference position marker P1 is a vector V (P1-P2) formed by the first reference position marker P1 and the second reference position marker P2 A vector V (P1-P3) formed by the first reference position marker P1 and the third reference position marker P3 and a vector V (P1-P3) formed by the first reference position marker P1 and the fourth reference position marker P4, (V (P1-P4)).
The vector formed based on the second reference position marker P2 is a vector V (P2-P1) formed by the second reference position marker P2 and the first reference position marker P1, A vector V (P2-P3) formed by the marker P2 and the third reference position marker P3 and a vector V (P2-P3) formed by the second reference position marker P2 and the fourth reference position marker P4. P2-P4).
The vector formed on the basis of the third reference position marker P3 is a vector V (P3-P1) formed by the third reference position marker P3 and the first reference position marker P1, A vector V (P3-P2) formed by the reference position marker P3 and the second reference position marker P2 and a vector V (P3-P2) formed by the third reference position marker P2 and the fourth reference position marker P4 V (P3 - P4)).
The vector formed based on the fourth reference position marker P4 is a vector V (P4-P1) formed by the fourth reference position marker P4 and the first reference position marker P1, A vector V (P4-P2) formed by the marker P4 and the second reference position marker P2 and a vector V (P4-P2) formed by the fourth reference position marker P4 and the third reference position marker P3. P4-P3).
At this time, only two vectors (for example, V (P1-P2) and V (P2-P1)) whose directions are opposite to each other are regarded as the same vector to define only one vector (for example, V (P1-P2)).
Therefore, when four reference position markers P1-P4 as shown in FIG. 6 are defined, the vectors for the two reference position markers defined by the operation of the
When the vectors for the reference position markers P1 to P4 are defined as described above, the
Next, the
(Where, θ is the vector (other vectors (such as the following, reference to the term "line vector"), when the formation is referred to "after the vector "), and the angle between the line vector and a vector, x q and y q are the position of the row direction and the position of the column direction with respect to the reference position marker corresponding to the end point at the start point and the end point of the line vector and x r and y r is the position in the row direction and the position in the column direction with respect to the reference position marker corresponding to the end point constituting the posterior vector as a component of the posterior vector, the V line vector is the line vector, and the V posterior vector is the posterior vector.
In Equation (1), if the time of the line vector is not the same as the time of the posterior vector, the position of the posterior vector is shifted horizontally or vertically with respect to the position of the line vector, (X q , y q , x r , y r ) of the posterior vector and the posterior vector.
Therefore, an angle [theta] formed by two different vectors (i.e., a line vector and a posterior vector) is calculated using [Equation 1]. At this time, the angle between the two vectors (for example, the angle between V (P1-P2) and V (P1-P3) and V (P1-P2) and V θ) is '0 °'.
The calculated angle? Has a positive value or a negative value, and if the value is positive, the direction indicated by the posterior vector on the basis of the line vector is counterclockwise, If the angle (-) is negative (-), the direction indicated by the posterior vector with respect to the line vector is clockwise.
For example, as shown in Fig. 7 (a), the value of the angle [theta] between the vector (V (P1-P2)) and the vector (V (P1-P3) The value of the angle? Between the vector V (P1-P2) and the vector V (P2-P4) becomes -60 degrees in the case of FIG. 7 (b) The direction indicated by the vector (V (P2-P4) (e.g., rear vector) with respect to the vector V (P1-P2) (line vector) is clockwise.
In this way, the values of the inter-vector angles calculated in all the vectors V1, V2, V2, V4, V5 and V6 are calculated as shown in Table 2 and stored in the storage unit 30 (S26)
The operation of the
To this end, the
4, the
In this example, an example of the photographed image of the inspection tray T12 obtained in the
Next, in step S32, the
To this end, the
At this time, the number of pixels arranged consecutively in each row direction and column direction is increased or decreased by a predetermined number based on the number of adjacent pixels in the row direction and column direction of the pixel group corresponding to the reference position marker, The margin of determination of the position marker can be varied.
That is, the
8, the total number of the preliminary reference position marker candidates S1-Sp detected in FIG. 8 is nine (p = 9), and the first to ninth preliminary reference positions Marker candidates S1 to S9.
Next, the
Therefore, the
At this time, in the same manner as described with reference to step S25 of FIG. 3, the distance calculation operation is performed by calculating the distance between the position of the first preliminary reference position marker candidate S1 and the position of one remaining preliminary reference position marker candidate S2- And calculates the distance related to the first preliminary reference position marker candidate S1.
The
S1-S5, S1-S6, S1-S7, S1-S8, S1, S2, S3, S4, P1-P3 |, and P1-P4 | associated with the first reference position marker P1 in the first and second reference positions P1, P2, P3, The
The distances P1-P2 |, P1-P3 | and P1-P4 | associated with the first reference position marker P1 are stored as information of the reference position markers P1-P4, (30).
In the same manner, in order to check again whether the first preliminary reference position marker candidate S1 is a candidate for the second reference position marker P2, the
S1-S2 |, | S1-S3 |, | S1-S4 |, | S1-S5 |, | S1-S6 |, | S1-S7 P1-P2 |, | P2-P3 |, and | P2-P4 | associated with the second reference position marker P2 among the first reference position markers S1, S2, The
Thus, in this way, it is determined whether or not the first preliminary reference position marker candidate S1 is a candidate for each of the first to fourth reference position markers P1-P4.
In the same manner, in order to determine which of the first to fourth reference position markers P1 to P4 are candidates for the second preliminary reference position marker candidate S2, the second preliminary reference position marker candidate S2 S2-S3 |, | S3-S4 |, | S2-S5) related to the second preliminary reference position marker candidate S2, which is the distance between the remaining preliminary reference position marker candidates S1 and S3- | S2-S6 |, S2-S7 |, S2-S8 |, S2-S9 | At this time, the distance (S2-S1 |) between the second preliminary reference position marker candidate S2 and the first preliminary reference position marker candidate S1 is already the first preliminary reference position marker candidate S1 (| S1 -S2 |), it is omitted.
S2-S3 |, | S3-S4 |, | S2-S5 |, | S2-S6 |, | S2-S7 |, | P 1 -
This operation is also applied to each of the remaining preliminary reference position markers S3 to S9 to determine which of the reference position markers P1 to P4 are candidates for the preliminary reference position markers P3 to P9, P9) of the at least one reference position marker (P1-P4).
Therefore, when the first to ninth preliminary reference position marker candidates S1 to S9 are judged as the preliminary reference position marker candidates as shown in Fig. 8, the effective preliminary reference position marker candidates S1, S2, S3, S4, S7 and S9 .
At this time, the first effective preliminary reference position marker candidate S1 is the candidate of the first reference position marker P1, and the second and fourth effective preliminary reference position marker candidates S2 and S4 are the second reference position marker P2 The third and seventh effective preliminary reference position marker candidates S3 and S7 are candidates of the third reference position marker P3 and the ninth effective spare reference position marker candidate S9 is the candidate of the fourth reference position marker P3, (P4).
Next, the
In the case of this example, all possible candidate positions of the preliminary reference position marker C1-Cm are all four (C1-C4), as shown in Table 3 below.
Next, the
That is, in the same effective preliminary reference position marker candidate group (C1-C4), the same effective spare reference position marker candidate can not be a candidate for the different reference position markers P1-P4. Accordingly, the
delete
The final reference position marker candidate S1 belonging to the final reference position marker candidate group C1 is S1, S2, S3, and S9. At this time, the final reference position marker candidate S1 is a candidate for the first reference position marker P1, The position candidate marker S2 is the candidate of the second reference position marker P2 and the final reference position marker candidate S3 is the candidate of the third reference position marker P3 and the final reference position marker candidate S9 is the candidate of the second reference position marker P2, 4 reference position marker P4.
Then, the
Then, the
If there is a final reference position marker candidate group having the same information as that of the reference position marker, the
The candidate group (C1-C4) selected as the last reference position marker candidate group in Table 3 will be described in more detail, for example.
P2, P3, and P4 belong to the final reference position marker candidate group C1 as the reference position markers P1, P2, P3, and P4, respectively, corresponding to Table 3, , The distance between two assumed reference position markers and the angle between two assumed reference position markers calculated using two vectors for two assumed reference position markers are calculated, 5]. In the case of the first final reference position marker candidate group C1, the formed vector becomes (a) in Fig.
In the case of the final reference position marker candidate group (C1), the distance between the two assumed reference position markers and the value of the angle formed by the two assumed reference position markers are the same as those of the reference position marker, respectively.
Therefore, the hypothetical reference position markers S1, S2, S3, and S9 belonging to the final reference position marker candidate group C1 are finally set to the final reference position markers P1, P2, P3, P4, -P4) but becomes the reference position marker located at the current position rather than the reference position which is the initial position of the reference position markers P1-P4.
Assuming that the assumed reference position markers S1, S2, S7, and S9 are the reference position markers P1, P2, P3, and P4 in the case of the final reference position marker candidate group C2, Are shown in [Table 6] and [Table 7]. At this time, the vector formed in the second final reference position marker candidate group C2 is as shown in FIG. 9 (b).
As shown in [Table 6] and [Table 7], since the information on the two assumed reference position markers and the information on the reference position marker are not the same, The reference position markers S1, S2, S7, S9 are not final reference position markers.
In this manner, information on the hypothetical reference position marker belonging to each of the final reference position marker candidate groups (C1-C4) is calculated, and until the last reference position marker candidate group having the same information as the information about the reference position marker is found A comparison operation is performed.
However, if there is no final reference position marker candidate group having the same information as the information about the reference position marker in all final reference position marker candidate groups (C1-C4) (S38), the
Therefore, the
For example, it is assumed that there is no candidate of the first reference position marker P1 among the preliminary reference position marker candidates S1-S9 determined in step S33.
Therefore, the
In a similar manner, the
In this way, since there is no candidate of the first reference position marker P1 among the plurality of preliminary reference position marker candidates S1-S9, the distance related to the first reference position marker P1 is used
The operation of determining whether each of the anticipated reference position marker candidates S1-S9 is a candidate of the first reference position marker P1 is omitted.
In this manner, it is determined whether the remaining preliminary reference position marker candidates S2 to S9 are candidates of the reference position markers P2 to P4 among the second to fourth reference position markers P2 to P4, The effective preliminary reference position marker candidate which is a candidate of at least one of the reference position markers P2-P4 is calculated.
Next, the
At this time, as described above, the candidates of the first reference position marker P1 do not exist in each of the generated preliminary position marker candidate groups (C1-Cm) (see, for example, Table 8).
As described above, a plurality of effective preliminary position marker candidate groups (C1-Cm) in which candidates of the first reference position marker P1 do not exist are generated, and as described above, the effective preliminary position marker candidates C1- It is determined whether the preliminary position marker candidates C1 to Cm exist at the same time as two or more reference position marker P2 to P4 candidates. If the same effective spare position marker candidate is present at the same time as two or more criteria If there is an effective preliminary position marker candidate group (C1-Cm) that is a candidate of the position marker P2-P4, the effective preliminary position marker candidate group is deleted to select the final reference position marker candidate group.
Next, it is the same as the operation in step S36, and information on each assumed reference position marker belonging to each final reference position marker candidate group is calculated, and information on the calculated assumed reference position marker and information on the reference position marker If there is a final reference position marker candidate group having the same information (i.e., information on the reference position marker whose information on the first reference position marker is deleted), the assumed reference position marker belonging to the candidate group is the final reference position marker.
However, in this process, information on the calculated assumed reference position marker and information on the reference position marker (i.e., information on the reference position marker whose information on the first reference position marker is deleted) If there is no candidate group, the
Therefore, under the assumption that there is no candidate of the second reference position marker P2 among the plurality of the preliminary reference position marker candidates S1-S9, the valid spare reference position marker candidate is again re-evaluated A new effective preliminary reference position marker candidate group is generated and a final reference position marker candidate group is selected from among the generated effective preliminary reference position marker candidate groups to determine a final reference position marker.
If the final reference position marker can not be determined through this process, the
This operation is repeated until it is determined that the assumed reference position marker of the final reference position marker candidate group corresponds to the finally corresponding reference position marker.
As a result, even if the reference position marker is lost in the photographed image, it is possible to select the final reference position marker among a plurality of hypothesized reference position markers using another detected hypothesized reference position marker.
In the case of this example, the case where there is no candidate of one reference position marker P1-P4 among the plurality of spare reference position marker candidates S1-Sp has been described, however, the number of the reference position marker to be lost can be changed .
When the last reference position marker corresponding to the reference position marker is selected from the plurality of final reference position marker candidates, the
At this time, the
Therefore, the
Therefore, the position of the final reference position marker is moved to the reference position of the reference position marker by the movement of the captured image, and the position of the captured image is aligned to the reference position before processing the taken image.
The spacing between the
Is the angle between one of the vectors associated with the final reference position marker and the vector associated with the reference position marker corresponding to this vector. For example, if one of the vectors associated with the final reference position marker is V (S1-S4) when the final reference position marker is S1, then the vector of the corresponding reference position marker is V (P1-P4) do.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.
10: Image acquisition unit 20: Operation control unit
21:
40: Display P1-Pn: Reference position marker
C1-Cm: candidate for preliminary reference position marker
S1-Sp: candidate for preliminary reference position marker
Claims (8)
An image acquiring unit for photographing an object having a reference position marker and generating an image of the object,
A candidate valid reference position marker candidate group for the reference position marker is selected from the captured image applied from the image obtaining unit and a final reference position marker candidate is selected from the selected valid spare reference position marker candidate group, Determining a final reference position marker candidate by comparing information on a final reference position marker candidate of the final reference position marker candidate group with information on a reference position marker, The current position of the final reference position marker is compared with the reference position of the reference position marker to adjust the current position of the final reference position marker to the reference position,
A distance between two reference position markers, and a value of an angle formed by two reference position markers,
Lt; / RTI >
The operation control unit,
Determining a pixel group having a plurality of pixels arranged in the row direction and the column direction in a manner that has a tone value already set in the photographed image and is arranged in a row direction and a column direction and judges the determined pixel group as a plurality of preliminary reference position marker candidates,
A distance between each of the preliminary reference position marker candidates and each remaining preliminary reference position marker candidate is calculated to calculate a distance related to each of the preliminary reference position marker candidates, Compares the distances associated with the reference position markers corresponding to the reference position marker candidates,
When a distance having the same value as each of distances related to the reference position marker corresponding to each of the preliminary reference position marker candidates is present in a distance related to each of the calculated preliminary reference position marker candidates, A candidate preliminary reference position marker candidate is determined as a candidate of a reference position marker, and a candidate of a preliminary reference position marker candidate is determined in a plurality of preliminary reference position marker candidates,
The effective preliminary reference position marker candidate group is determined by combining the effective spare preliminary position position marker candidates, which are candidates of the reference position position marker,
The operation control unit,
Determining that there is no candidate of one reference position marker among the plurality of preliminary reference position marker candidates if the final reference position marker candidate group does not exist in the selected candidate group of candidate effective reference position markers, An operation of determining a new effective preliminary reference position marker candidate to determine whether it is a candidate of the remaining reference position markers excluding one reference position marker which is assumed to be nonexistent using the marker candidate
Position position marker position correcting device.
The operation control unit may further include a reference position marker candidate group determining unit for determining a candidate reference position marker candidate group by deleting the effective preliminary reference position marker candidate group in which the same effective preliminary reference position marker is set as a candidate of a reference position marker group having the same effective preliminary reference position marker, .
The operation control unit may calculate, at the last reference position marker candidate of the final reference position marker candidate group, the distance between the assumed reference position marker, which is the information about the hypothetical reference position marker for each final reference position marker candidate, And determines a final reference position marker candidate belonging to the last reference position marker candidate group having the same information as that of the reference position marker as a final reference position marker.
A pixel group including a plurality of pixels arranged in a row direction and a column direction in a row direction and a column direction and having gradation values that have been set in the photographed image applied from the image acquiring unit is determined and the determined pixel group is set as a plurality of preliminary reference position marker candidates Determining,
Calculating a distance between each of the preliminary reference position marker candidates and each of the remaining preliminary reference position marker candidates to calculate a distance related to each of the preliminary reference position marker candidates,
Comparing the distance between each of the calculated preliminary reference position marker candidates and the distance related to the reference position marker corresponding to each of the preliminary reference position marker candidates,
When a distance having the same value as each of distances related to the reference position marker corresponding to each of the preliminary reference position marker candidates is present in a distance related to each of the calculated preliminary reference position marker candidates, Determining an effective preliminary reference position marker candidate from among a plurality of preliminary reference position marker candidates by judging the effective preliminary reference position marker candidate as a candidate of the reference position marker,
Determining an effective preliminary reference position marker candidate group by combining effective preliminary reference position marker candidates that are candidates of the reference position marker,
Selecting an effective preliminary reference position marker candidate for the reference position marker,
Selecting a final reference position marker candidate group having a final reference position marker candidate in the selected effective spare reference position marker candidate group,
Comparing information of a final reference position marker candidate of the final reference position marker candidate group with information of a reference position marker,
Determining whether a final reference position marker candidate group having the same information as the reference position marker exists,
Determining a final reference position marker candidate that belongs to the last reference position marker candidate group that exists if there is a final reference position marker candidate group having the same information as the information about the reference position marker,
Comparing the current position of the determined final reference position marker with the reference position of the reference position marker to adjust the current position of the final reference position marker to the reference position,
Determining that there is no candidate of one reference position marker among the plurality of preliminary reference position marker candidates if there is no final reference position marker candidate group having the same information as the information about the reference position marker,
An operation of determining a new effective preliminary reference position marker candidate to determine whether or not a candidate of the remaining reference position markers other than one reference position marker assumed to be nonexistent is a candidate using the plurality of preliminary reference position marker candidates step
The position of the reference position marker is corrected.
In the step of selecting the final reference position marker candidate group, the valid preliminary position marker candidate group in which the same effective preliminary reference position marker is determined as a candidate of the reference position marker different from the selected effective preliminary reference position marker candidate group is deleted, A method for correcting a position of a reference position marker for determining a candidate group.
Wherein determining the final reference position marker comprises:
Calculating a distance between an assumed reference position marker and an angle between two vectors, which is information on an assumed reference position marker for each final reference position marker candidate in the final reference position marker candidate of the final reference position marker candidate group,
Comparing the information about the reference position marker with information about the calculated assumed reference position marker, and
Determining a final reference position marker candidate as a final reference position marker candidate when the final reference position marker candidate group having the same information about the reference position marker and the calculated information about the assumed reference position marker exists;
The position of the reference position marker is corrected.
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WO2018135701A1 (en) * | 2017-01-20 | 2018-07-26 | 인스페이스 | Device and method for correcting position of reference position marker |
WO2019107666A1 (en) * | 2017-11-29 | 2019-06-06 | 한양대학교 산학협력단 | Urine test strip comprising timer, and method for detecting and analyzing urine test strip |
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KR101310405B1 (en) * | 2012-07-05 | 2013-09-23 | 한국 한의학 연구원 | Apparatus and method of estimating pulsation position and controlling position of pulsation sensor |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2018135701A1 (en) * | 2017-01-20 | 2018-07-26 | 인스페이스 | Device and method for correcting position of reference position marker |
WO2019107666A1 (en) * | 2017-11-29 | 2019-06-06 | 한양대학교 산학협력단 | Urine test strip comprising timer, and method for detecting and analyzing urine test strip |
KR20190062775A (en) * | 2017-11-29 | 2019-06-07 | 한양대학교 산학협력단 | Urine test strip including timer, method for detecting and analyzing urine test strip |
KR102016989B1 (en) | 2017-11-29 | 2019-09-02 | 한양대학교 산학협력단 | Urine test strip including timer, method for detecting and analyzing urine test strip |
US11333658B2 (en) | 2017-11-29 | 2022-05-17 | Industry-University Cooperation Foundation Hanyang University | Urine test strip comprising timer, and method for detecting and analyzing urine test strip |
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