JP2006010395A - System for forming three-dimensional image and measuring volume with image specifying region in copy image of two-dimensional image as intermediate image - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for measuring volume by forming three-dimensional images regardless of contact or overlapping of two-dimensional images and by specifying regions in significant images. <P>SOLUTION: A two-dimensional image is displayed on a display A1. Regions are specified in a copy image of the two-dimensional images A2 as an intermediate image A3. Positional and height information is read A5 for every region A4 to form a three-dimensional image for every specified region A6 and measure volume A7. The three-dimensional-image-forming and volume-measuring system has the functions A1-A7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to forming a three-dimensional image from a two-dimensional image and measuring the volume. The application fields envisaged by the present invention are the measurement field, display field and printing field.

  In order to measure the volume of the object to be measured, the object to be measured is made of clay, polystyrene foam or the like and the volume is measured.

  A well-known technique for three-dimensional images is computer graphics (hereinafter abbreviated as CG). In this image forming technique, all characteristic points, line segments, and surfaces are stored in a memory and displayed on a display. In this case, the correction is repeated after calculating and inputting or displaying all the three-dimensional coordinates of the feature portion. In order to reduce input work, a three-dimensional image is formed using a triangular or quadrilateral polygon mesh (a collection of polygons).

  Internal measurement and volume measurement are performed with electrical measuring instruments such as three-dimensional measuring instruments such as range finders and radiation instruments and call counters.

As shown in Patent Document 1 and Patent Document 2, when forming a three-dimensional image from a two-dimensional image, the difference in information obtained from the two images corresponding to the left eye and the right eye using two cameras is calculated. Some use it to form a three-dimensional image. Further, as seen in Patent Document 3, an apparatus that creates a three-dimensional image by shifting the frame of the left eye and the right eye in consideration of the flow of the image frame has been studied. However, the field of view of two-dimensional images obtained from two cameras, the operation of detecting the same point corresponding to each point (pixel, usually XY coordinates) and the same point of height (usually Z-axis coordinates), and device-specific It is necessary to make adjustments to correct correction calculations and brightness differences from distortion.
Japanese Patent Laid-Open No. 8-168058 JP 2003-99759 A JP-A-7-264631

As seen in Patent Document 4, there is also a method of forming a three-dimensional image by dividing a region from a two-dimensional image into a shape having height information of the three-dimensional image to obtain height information. However, some objects cannot be divided into shapes having height information when the objects contact or overlap.
Japanese Patent Application No. 2004-81912

  If the object to be three-dimensionalized is separated into shapes having height information such as spheres, ellipsoidal spheres, and cylinders, three-dimensionalization is possible. However, when the height information is obtained by dividing the region from the two-dimensional image into the shape having the height information of the three-dimensional image and the three-dimensional image is formed, if the target object touches or overlaps, the height information is changed. Cannot be divided into areas.

  In the present invention, using a paint function or the like while viewing a two-dimensional image, an intermediate image in which a shape having the height information of the object is designated is created, and a computer or the like performs calculation processing according to each shape. It is an object to provide a device for forming a three-dimensional image and measuring a volume.

  The measurement flow of this invention is shown in FIG. A target two-dimensional image to be three-dimensionalized is shown in FIG. 2, and an intermediate image is generated by separating the contact areas by color-coding the sphere, the elliptical sphere, and the cylindrical shape with a copy image of this image. 3, 4 and 5 show intermediate images obtained by color-coding the target image to be three-dimensionalized. 3 is an image obtained by extracting red from the intermediate image, FIG. 4 is an image obtained by extracting green from the intermediate image, and FIG. 5 is an image obtained by extracting blue from the intermediate image.

  A region is extracted from each color of the color-coded intermediate image, and a start position, an end position, and a gravity center position are detected for the XY coordinates. By adding the area coordinates and the calculated or designated height information, the original image is three-dimensionalized in each area.

  A three-dimensional three-dimensional image is arranged at the position of each region to form a three-dimensional image, and the volume is measured.

"Effect of the embodiment"
According to this embodiment, by using the copy image of the target two-dimensional image to be three-dimensionalized, creating an intermediate image that designates a region with a color that designates a sphere, an elliptical sphere, or a cylindrical shape. Even if the image to be converted has contact / overlap, a three-dimensional image can be formed and the volume can be measured without requiring a complicated operation.

  In the present invention, even if the shape is not simple, the range of the object can be designated, and the designated portion is handled as if it were an independent shape, so that a minute change can be reflected in the three-dimensional image.

"Other embodiments"
When creating a three-dimensional object as an object with clay or the like, there is a problem that time and labor are required, and accuracy of volume measurement cannot be obtained.

  When measuring volume using computer graphics, it takes a long time and skilled work to input coordinates from a keyboard or to calculate coordinates with a program to form a three-dimensional image of an object. There was a problem to do.

  When forming a 3D image by obtaining information with a 3D measuring instrument such as a range finder or radiation equipment, the object must be larger than the minimum measurement area of the equipment, such as a small object such as a microscope. However, it was impossible to measure, and high processing and high cost were problems. Further, when measuring the volume with an electrical device such as a call counter, there are problems in that the number and volume can be obtained but the type cannot be specified and the cost is high.

When forming a 3D image from a 2D image using the shape of the object to be 3D,
There is a problem that the extraction of the object cannot always be stably extracted due to the overlap of objects and the brightness problem.

  In order to specify a region of a two-dimensional image by color, the number of colors that can be specified must be greater than the specified range. In addition, when an area is designated accurately, it is efficient if there is a color designation function having a function such as enlargement.

  In the biomass measurement represented by the measurement of plankton and the measurement of bacteria, it is necessary to measure the volume of the individual. Such a world is often on the order of μm, and a three-dimensional measuring instrument cannot be used, and the current situation is that observation and measurement are performed using a microscope. If a volume can be measured by forming a three-dimensional image by specifying a region for such volume measurement, stable and accurate measurement can be performed with a simple operation, and the workload for the measurer can be reduced.

  A copy image of a plankton two-dimensional image obtained from a microscopic image was used as an intermediate image, and a shape having height information was color-coded to designate a region. Using this intermediate image, the existence area and the center of gravity of the shape having height information were measured, and a three-dimensional image was formed. The volume of each part constituting the whole was calculated from this three-dimensional image, providing a measurement of the proportion and volume of each part in the volume. In addition, since the plankton is transparent, the inside can be seen through, which was useful for analysis of the internal structure.

3D image formation and volume measurement flow 2D image to be converted to 3D The area specified in red for the specified intermediate image The area specified in green for the specified intermediate image Area specified in blue for the specified intermediate image Three-dimensional image using an intermediate image with a specified region 3D image formation and volume measurement system

Explanation of symbols

A1 to A7: Item numbers in the flowchart.

Claims (2)

A three-dimensional image is formed using a region-designated image as an intermediate image, and a volume is measured by using a region-designated image as a two-dimensional image. System. A system for measuring a volume by forming a three-dimensional image using an intermediate-designated image as an intermediate image in a copy image of a two-dimensional image, wherein the volume is measured based on the formed three-dimensional image.

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