CN111553903A - Self-adaptive measuring method and device for focus area image - Google Patents
Self-adaptive measuring method and device for focus area image Download PDFInfo
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Abstract
The invention discloses a self-adaptive measuring method and a device for a focus area image, and the method specifically comprises the following contents: acquiring and displaying a nodule focus region image; determining the end point A, B of the major diameter according to the user click position; determining its midpoint location C from the endpoint A, B; determining a short path perpendicular to the long path according to the midpoint position C, and determining two end points E, F of the short path; adjust any of the end points A, B, E, F according to the user input and always keep the minor and major axes perpendicular; the square box defined by A, B, E, F, the respective lengths of the major and minor diameters, and the average of the major and minor diameters were determined in real time and displayed. By the method and the device, a measuring tool can be generated by one key, and the size of the focus area image can be flexibly measured.
Description
Technical Field
The invention relates to the field of medical images, in particular to a self-adaptive measuring method and device for a focus area image.
Background
Currently, nodules have attracted a lot of attention, such as lung nodules, thyroid nodules, etc., and physicians generally view the condition of patient nodules through medical imaging means. As the patient's nodules may change over time, e.g., increase, decrease, or grow new nodules, etc. The disease condition of the patient can be judged according to the size of the nodule so as to formulate a reasonable treatment method. In the prior art, according to the focus measurement standard of imaging, two radial lines of the maximum layer of a focus are measured: the maximum major axis and the longest axis perpendicular thereto. Currently, the size of a nodule is mainly judged by a doctor according to a medical image of a patient, which needs to consume a lot of time, and has low efficiency and larger subjectivity. The prior art document CN108717700A provides a method for detecting the length of the long and short diameters of a nodule, which mainly adopts a nodule segmentation model to obtain a nodule region from a three-dimensional coordinate image region of interest, and measures the nodule region by utilizing covariance matrix decomposition or ellipsoid fitting to determine the length of the long and short diameters of a node. Compared with the manual marking method, the method is more efficient, but needs matrix transformation and space transformation on the pixel set of the node area, has large data processing capacity, can only determine the final length of the long path and the final length of the short path, and is easy to cause low accuracy of the measurement result due to complex transformation of data.
On pulmonary nodule measurements, the Fleischner association recommends: nodules less than 10mm are averaged for long and short diameters (which more accurately reflects the 3D volume of the tumor), and nodules or clusters greater than 10mm should be scored for long and short diameters, since long diameter can be used to determine the T factor in the classification of lung cancer, as well as an index that reflects the efficacy of the tumor treatment. However, there is no method for providing the average value of the long and short diameters, and a method for simply, accurately and rapidly providing the long and short diameters of the nodule region is not provided.
Disclosure of Invention
In view of the above, the present invention has been developed to provide a solution that overcomes, or at least partially solves, the above-mentioned problems. Accordingly, in one aspect of the present invention, there is provided an adaptive metrology method for a lesion area image, the method comprising: acquiring and displaying a nodule focus region image; determining the end point A, B of the major diameter according to the user click position; determining its midpoint location C from the endpoint A, B; determining a short path perpendicular to the long path according to the midpoint position C, and determining two end points E, F of the short path; adjust any of the end points A, B, E, F according to the user input and always keep the minor and major axes perpendicular; the square box defined by A, B, E, F, the respective lengths of the major and minor diameters, and the average of the major and minor diameters were determined in real time and displayed.
Optionally, if the adjustment endpoint E is E', the method specifically includes the steps of determining a projection Ep of E on the major axis; determining the projection E 'p of the adjusted E' on the straight line AB; calculating the difference value of Ep and E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F point to obtain the coordinate of the F 'and positioning the F' point; and connecting the short path E ' F ' with the short path EF ' to generate a short path E ' F ', wherein the short path E ' F ' is parallel to the short path EF.
Optionally, determining the square frame defined by A, B, E, F specifically includes: determining a projection Ep of E on the major axis AB; and respectively calculating the difference value of the Ep and the A point and the difference value of the Ep and the B point, and respectively subtracting and adding the 2 difference values from the two-dimensional coordinate value of E, F to determine 4 vertexes of the square frame.
Optionally, when the point B is adjusted to B', the method includes the following steps: based on user input, calculating the rotation angle a of the straight line BA and the B 'A, and rotating the EA around the A by the rotation angle a to obtain E'; obtaining a short diameter E 'F' perpendicular to the long diameter B 'A through the E', wherein the length of the E 'F' is the same as that of the EF; adjusting any one of the end points E 'and F' according to the input of a user, and keeping the short diameter to be always vertical to the long diameter; the square boxes defined by A, B ', E ', F ', the respective lengths of the major and minor diameters, and the average of the major and minor diameters are determined in real time and displayed.
Optionally, when the end point E 'is adjusted to E ″, the method specifically includes the steps of determining a projection E' p of E 'on the major axis B' a; determining the projection E ' p of the adjusted E ' on the straight line B ' A; calculating the difference value of the E 'p and the E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F ' point to obtain the coordinate of the F ' and locate the F ' point; and connecting F 'with E', generating a new short path E 'F', wherein the short path E 'F' is parallel to the short path E 'F'.
The invention also provides a self-adaptive measuring device for the focus area image, which comprises an image area acquisition module, a focus area image acquisition module and a focus area image acquisition module, wherein the image area acquisition module is used for acquiring and displaying the nodule focus area image; the long-diameter end point determining module is used for determining the end point A, B of the long diameter according to the click position of the user; the short path determining module is used for determining a midpoint position C of the short path according to the endpoint A, B and determining a short path perpendicular to the long path according to the midpoint position C, and the short path has two end points E, F;
a long and short path adjusting module for adjusting any one of the end points A, B, E, F according to the user input and keeping the short path perpendicular to the long path all the time; and the measurement module is used for determining and displaying the average value of the length, the long diameter and the short diameter of the square box, the long diameter and the short diameter which are defined by A, B, E, F in real time.
Optionally, when the adjustment endpoint E is E', the long-short path adjustment module performs a process of determining a projection Ep of E on the long path; determining the projection E 'p of the adjusted E' on the straight line AB; calculating the difference value of Ep and E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F point to obtain the coordinate of the F 'and positioning the F' point; and connecting the short path E ' F ' with the short path EF ' to generate a short path E ' F ', wherein the short path E ' F ' is parallel to the short path EF.
Optionally, the measurement module performs the following process: determining a projection Ep of E on the major axis AB; and respectively calculating the difference value of the Ep and the A point and the difference value of the Ep and the B point, and respectively subtracting and adding the 2 difference values from the two-dimensional coordinate value of E, F to determine 4 vertexes of the square frame.
Optionally, when the point B is adjusted to B ', the long-short path adjusting module performs a process of calculating a rotation angle a of the straight line BA and the point B ' a based on user input, and rotating the EA around the point a by the rotation angle a to obtain an angle E '; obtaining a short diameter E 'F' perpendicular to the long diameter B 'A through the E', wherein the length of the E 'F' is the same as that of the EF; and adjusting any one of the end points E 'and F' according to the input of the user, and keeping the short path always perpendicular to the long path.
Optionally, when the end point E 'is adjusted to E ″, the long and short path adjusting module performs a process of determining a projection E' p of E 'on the long path B' a; determining the projection E ' p of the adjusted E ' on the straight line B ' A; calculating the difference value of the E 'p and the E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F ' point to obtain the coordinate of the F ' and locate the F ' point; and connecting F 'with E', generating a new short path E 'F', wherein the short path E 'F' is parallel to the short path E 'F'.
The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages: the invention can automatically and always keep the long diameter and the short diameter vertical, can display the external minimum rectangular frame in real time, and can simultaneously display the average values of the long diameter, the short diameter and the long diameter and the short diameter, thereby being convenient for obtaining the sizes of various angles of focus area images.
The above description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the technical solutions of the present invention and the objects, features, and advantages thereof more clearly understandable.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a flow chart of the adaptive metrology method proposed by the present invention for lesion area images;
FIG. 2 illustrates an initial cross measurement tool interface diagram generated using the method provided by the present invention;
FIG. 3 shows a cross measurement tool interface diagram after minor diameter adjustment;
FIG. 4 illustrates a cross measurement tool interface diagram generated after adjustment of the major diameter;
FIG. 5 shows an interface diagram of a cross measurement tool after adjustment of the major diameter and further adjustment of the minor diameter.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention aims to provide a self-adaptive measuring method for a focus area image, which can measure the focus area image, particularly the focus area image with irregular outline. As shown in fig. 1, the method specifically includes: s1, acquiring and displaying a nodule focus region image; s2, determining an end point A, B of the major diameter according to the click position of the user; s3, determining a short path perpendicular to the long path according to the end point A, B, and determining two end points E, F of the short path; s4, any one of the end points A, B, E, F is adjusted according to the input of the user, and the short diameter is always perpendicular to the long diameter; and S5, determining and displaying the average values of the length, the long diameter and the short diameter of the square frame, the long diameter and the short diameter defined by A, B, E, F in real time.
By the method provided by the invention, the long path and the short path are established in real time when the left mouse button is pressed and dragged. The initially created major diameter is determined by the position where the user presses the left mouse button and the position where the user drags the left mouse button, the minor diameter is automatically generated, is perpendicular to the major diameter and bisects the major diameter, and the initial length of the minor diameter is equal to the major diameter, so that the cross measuring tool can be created through one-key operation of the user, as shown in fig. 2.
After the cross measuring tool is established, the end points of the long diameter and the short diameter can be adjusted at any time. The 2 end points of the short diameter can be independently adjusted in position without changing the long diameter, the short diameter is always kept perpendicular to the long diameter, the lengths of the short diameter and the long diameter and the circumscribed rectangle frame (square frame) defined by the long diameter and the short diameter can be displayed in real time in the adjusting process, the end points of the short diameter are adjusted on the initially created cross measuring tool, and the adjusted cross measuring tool is shown in fig. 3.
If the adjusting endpoint E is E', the method specifically comprises the following steps of determining the projection Ep of the E on the major axis; determining the projection E 'p of the adjusted E' on the straight line AB; calculating the difference value of Ep and E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F point to obtain the coordinate of the F 'and positioning the F' point; and connecting the short path E ' F ' with the short path EF ' to generate a short path E ' F ', wherein the short path E ' F ' is parallel to the short path EF.
Determining a square box defined by A, B, E, F, specifically including: determining a projection Ep of E on the major axis AB; and respectively calculating the difference value of the Ep and the A point and the difference value of the Ep and the B point, and respectively subtracting and adding the 2 difference values from the two-dimensional coordinate value of E, F to determine 4 vertexes of the square frame.
The 2 end points of the long diameter can be respectively adjusted and placed at any position, when the long diameter is adjusted, the short diameter is automatically adjusted along with the adjustment of the long diameter, and the short diameter is always vertical to the long diameter. And in the adjusting process, the lengths of the long diameter and the short diameter and the external rectangular frame are displayed in real time. Fig. 4 shows the cross measuring tool after the major diameter adjustment.
When the point B is adjusted to B', the method comprises the following steps: based on user input, calculating the rotation angle a of the straight line BA and the B 'A, and rotating the EA around the A by the rotation angle a to obtain E'; obtaining a short diameter E 'F' perpendicular to the long diameter B 'A through the E', wherein the length of the E 'F' is the same as that of the EF; adjusting any one of the end points E 'and F' according to the input of a user, and keeping the short diameter to be always vertical to the long diameter; the square boxes defined by A, B ', E ', F ', the respective lengths of the major and minor diameters, and the average of the major and minor diameters are determined in real time and displayed.
After the long diameter is adjusted, if the short diameter is adjusted, as a specific implementation mode, when the end point E ' is adjusted to be E ', the method specifically comprises the following steps of determining the projection E ' p of E ' on the long diameter B ' A; determining the projection E ' p of the adjusted E ' on the straight line B ' A; calculating the difference value of the E 'p and the E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F ' point to obtain the coordinate of the F ' and locate the F ' point; and connecting F 'with E', generating a new short path E 'F', wherein the short path E 'F' is parallel to the short path E 'F'. Fig. 5 shows a case where the short path end point is adjusted after the long path end point is adjusted.
The invention also provides a self-adaptive measuring device for the focus area image, which comprises an image area acquisition module, a focus area image acquisition module and a focus area image acquisition module, wherein the image area acquisition module is used for acquiring and displaying the nodule focus area image; the long-diameter end point determining module is used for determining the end point A, B of the long diameter according to the click position of the user; the short path determining module is used for determining a midpoint position C of the short path according to the endpoint A, B and determining a short path perpendicular to the long path according to the midpoint position C, and the short path has two end points E, F;
a long and short path adjusting module for adjusting any one of the end points A, B, E, F according to the user input and keeping the short path perpendicular to the long path all the time; and the measurement module is used for determining and displaying the average value of the length, the long diameter and the short diameter of the square box, the long diameter and the short diameter which are defined by A, B, E, F in real time.
As a specific implementation mode, when the adjusting end point E is E', the long-short-path adjusting module executes the following processes of determining the projection Ep of the E on the long path; determining the projection E 'p of the adjusted E' on the straight line AB; calculating the difference value of Ep and E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F point to obtain the coordinate of the F 'and positioning the F' point; and connecting the short path E ' F ' with the short path EF ' to generate a short path E ' F ', wherein the short path E ' F ' is parallel to the short path EF.
When determining the circumscribed rectangle frame of the long diameter and the short diameter, the measurement module executes the following processes: determining a projection Ep of E on the major axis AB;
and respectively calculating the difference value of the Ep and the A point and the difference value of the Ep and the B point, and respectively subtracting and adding the 2 difference values from the two-dimensional coordinate value of E, F to determine 4 vertexes of the square frame.
When the long diameter is adjusted, as a specific embodiment, when the point B is adjusted to the point B ', the long and short diameter adjusting module performs the following processes of calculating the rotation angle a of a straight line BA and the point B ' A based on user input, and rotating the EA around the A by the angle a to obtain E ';
obtaining a short diameter E 'F' perpendicular to the long diameter B 'A through the E', wherein the length of the E 'F' is the same as that of the EF; and adjusting any one of the end points E 'and F' according to the input of the user, and keeping the short path always perpendicular to the long path.
After the long diameter is adjusted, when the short diameter needs to be continuously adjusted, as a specific implementation mode, when the end point E ' is adjusted to be E ', the long and short diameter adjusting module executes the following processes of determining the projection E ' p of the E ' on the long diameter B ' A; determining the projection E ' p of the adjusted E ' on the straight line B ' A; calculating the difference value of the E 'p and the E' p in the two-dimensional coordinate direction; subtracting the difference value from the coordinate of the F ' point to obtain the coordinate of the F ' and locate the F ' point; and connecting F 'with E', generating a new short path E 'F', wherein the short path E 'F' is parallel to the short path E 'F'.
The technical scheme provided in the embodiment of the application at least has the following technical effects or advantages: the invention can automatically and always keep the long diameter and the short diameter vertical, can display the external minimum rectangular frame in real time, and can simultaneously display the average values of the long diameter, the short diameter and the long diameter and the short diameter, thereby being convenient for obtaining the sizes of various angles of focus area images.
In the description provided herein, certain specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (10)
1. A self-adaptive measuring method for a lesion area image is characterized by comprising the steps of obtaining and displaying a nodule lesion area image;
determining the end point A, B of the major diameter according to the user click position;
determining a short path perpendicular to the long path according to the end point A, B, and determining two end points E, F of the short path;
adjust any of the end points A, B, E, F according to the user input and always keep the minor and major axes perpendicular;
the square box defined by A, B, E, F, the respective lengths of the major and minor diameters, and the average of the major and minor diameters were determined in real time and displayed.
2. The method according to claim 1, wherein if the endpoint E is adjusted to be E', the method specifically comprises the following steps:
determining a projection Ep of E on the major axis;
determining the projection E 'p of the adjusted E' on the straight line AB;
calculating the difference value of Ep and E' p in the two-dimensional coordinate direction;
subtracting the difference value from the coordinate of the F point to obtain the coordinate of the F 'and positioning the F' point;
and connecting the short path E ' F ' with the short path EF ' to generate a short path E ' F ', wherein the short path E ' F ' is parallel to the short path EF.
3. The method of claim 1, wherein determining the square box defined by A, B, E, F in real time specifically comprises:
determining a projection Ep of E on the major axis AB;
and respectively calculating the difference value of the Ep and the A point and the difference value of the Ep and the B point, and respectively subtracting and adding the 2 difference values from the two-dimensional coordinate value of E, F to determine 4 vertexes of the square frame.
4. The method of claim 1, wherein when adjusting point B to B', the method comprises the steps of:
based on user input, calculating the rotation angle a of the straight line BA and the B 'A, and rotating the EA around the A by the rotation angle a to obtain E';
obtaining a short diameter E 'F' perpendicular to the long diameter B 'A through the E', wherein the length of the E 'F' is the same as that of the EF;
adjusting any one of the end points E 'and F' according to the input of a user, and keeping the short diameter to be always vertical to the long diameter; the square boxes defined by A, B ', E ', F ', the respective lengths of the major and minor diameters, and the average of the major and minor diameters are determined in real time and displayed.
5. The method according to claim 4, wherein when the endpoint E' is adjusted to E ", the method specifically comprises the following steps:
determining a projection E ' p of E ' on the major axis B ' A;
determining the projection E ' p of the adjusted E ' on the straight line B ' A;
calculating the difference value of the E 'p and the E' p in the two-dimensional coordinate direction;
subtracting the difference value from the coordinate of the F ' point to obtain the coordinate of the F ' and locate the F ' point;
and connecting F 'with E', generating a new short path E 'F', wherein the short path E 'F' is parallel to the short path E 'F'.
6. An adaptive measurement device for a lesion area image is characterized by comprising an image area acquisition module, a measurement module and a measurement module, wherein the image area acquisition module is used for acquiring and displaying a nodule lesion area image;
the long-diameter end point determining module is used for determining the end point A, B of the long diameter according to the click position of the user;
a short path determining module, configured to determine a short path perpendicular to the long path according to the long path endpoint A, B, where the short path has two endpoints E, F;
a long and short path adjusting module for adjusting any one of the end points A, B, E, F according to the user input and keeping the short path perpendicular to the long path all the time;
and the measurement module is used for determining and displaying the average value of the length, the long diameter and the short diameter of the square box, the long diameter and the short diameter which are defined by A, B, E, F in real time.
7. The adaptive metrology device of claim 6, wherein when the adjusting endpoint E is E', the long and short path adjusting module performs the following process:
determining a projection Ep of E on the major axis;
determining the projection E 'p of the adjusted E' on the straight line AB;
calculating the difference value of Ep and E' p in the two-dimensional coordinate direction;
subtracting the difference value from the coordinate of the F point to obtain the coordinate of the F 'and positioning the F' point;
and connecting the short path E ' F ' with the short path EF ' to generate a short path E ' F ', wherein the short path E ' F ' is parallel to the short path EF.
8. The adaptive metrology device of claim 6, wherein the metrology module performs the following:
determining a projection Ep of E on the major axis AB;
and respectively calculating the difference value of the Ep and the A point and the difference value of the Ep and the B point, and respectively subtracting and adding the 2 difference values from the two-dimensional coordinate value of E, F to determine 4 vertexes of the square frame.
9. The adaptive metrology device of claim 6, wherein the long and short path tuning module performs the following process when tuning point B to point B':
based on user input, calculating the rotation angle a of the straight line BA and the B 'A, and rotating the EA around the A by the rotation angle a to obtain E';
obtaining a short diameter E 'F' perpendicular to the long diameter B 'A through the E', wherein the length of the E 'F' is the same as that of the EF;
and adjusting any one of the end points E 'and F' according to the input of the user, and keeping the short path always perpendicular to the long path.
10. The adaptive metrology device of claim 9, wherein the major-minor path adjustment module performs the following process when adjusting the endpoint E' to E ″:
determining a projection E ' p of E ' on the major axis B ' A;
determining the projection E ' p of the adjusted E ' on the straight line B ' A;
calculating the difference value of the E 'p and the E' p in the two-dimensional coordinate direction;
subtracting the difference value from the coordinate of the F ' point to obtain the coordinate of the F ' and locate the F ' point;
and connecting F 'with E', generating a new short path E 'F', wherein the short path E 'F' is parallel to the short path E 'F'.
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