WO2002091304A1 - Systeme d'edition de motif par entree manuelle - Google Patents

Systeme d'edition de motif par entree manuelle Download PDF

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Publication number
WO2002091304A1
WO2002091304A1 PCT/JP2002/004353 JP0204353W WO02091304A1 WO 2002091304 A1 WO2002091304 A1 WO 2002091304A1 JP 0204353 W JP0204353 W JP 0204353W WO 02091304 A1 WO02091304 A1 WO 02091304A1
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WO
WIPO (PCT)
Prior art keywords
area
erase
erasure
intersection
pattern
Prior art date
Application number
PCT/JP2002/004353
Other languages
English (en)
Japanese (ja)
Inventor
Terufumi Hosoya
Original Assignee
T-5 Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by T-5 Corporation filed Critical T-5 Corporation
Publication of WO2002091304A1 publication Critical patent/WO2002091304A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/60—Editing figures and text; Combining figures or text

Definitions

  • the present invention relates to graphic drawing (C AD) using a computer, and more particularly to a graphic editing system by handwriting input that enables graphic erasure as if writing on paper.
  • a mouse or an electronic pen is used to operate a deletion cursor (eraser) on a display as if by handwriting, and delete part or all of a drawn line, circle, ellipse, polygon, or other figure.
  • Something like that has been proposed For example, (1) In Japanese Patent Application Laid-Open No. 60-129829, a writing area on an electronic tablet having coordinates corresponding to display coordinates is divided into a plurality of grid boxes, and the writing area is intersected with an eraser. Search for the line segment or point of, and erase the figure in real time as the eraser moves.
  • the trajectory of the erasure range is calculated and the vector data within the range is erased, so the erasure will not be mottled.
  • the figure to be erased is marked by handwriting, and the erase gesture is input by handwriting to erase the figure all at once. Since selection is not a command, various operations or areas that are difficult to draw occur, and partial erasure of figures cannot be performed.
  • the present invention has been made in order to solve the above-mentioned problem, and has as its object to improve the operability by making it possible to select an erasing area arbitrarily as if by handwriting without complicated operation for erasing a figure. I do.
  • the present invention provides a system for editing a figure by handwriting input, wherein:
  • Figure determining means for determining whether the starting point and the ending point of the figure to be edited are the same, and determining whether or not to divide the figure according to the figure determination result and the area to be edited, and dividing or changing the figure.
  • Division change processing means for determining whether the starting point and the ending point of the figure to be edited are the same, and determining whether or not to divide the figure according to the figure determination result and the area to be edited, and dividing or changing the figure.
  • the drawing coordinates are determined by determining whether or not the erase snap range of the figure is set, and if so, its type, and determining whether or not the edit target area is within the set erase snap range.
  • the present invention is characterized in that the size of the erase snap range can be changed.
  • FIG. 1 is a diagram showing the overall configuration of a graphic editing system according to the present invention.
  • FIG. 2 is a diagram for explaining an example of linear division (elimination up to two intersections) according to the present invention.
  • FIG. 3 is a diagram for explaining an example of straight line division (combination of tracing and erasing up to one intersection) according to the present invention.
  • FIG. 4 is a diagram illustrating an example of linear division (erasing of traced portions) according to the present invention.
  • FIG. 5 is a diagram illustrating an example of dividing a straight line passing through the center of a circle according to the present invention.
  • FIG. 6 is a diagram illustrating an example of erasing a part of a circular arc where a circle and a straight line intersect according to the present invention.
  • FIG. 7 is a diagram illustrating an example of changing a circle into two arcs according to the present invention.
  • FIG. 8 is a diagram illustrating an example of graphic erasure according to the present invention.
  • FIG. 9 is an example of erasing a figure drawn using the grid of the present invention.
  • FIG. 10 is a diagram for explaining the graphic erasure processing flow of the present invention.
  • FIG. 1 is a diagram showing the overall configuration of the graphic editing system of the present invention.
  • the computer for figure editing processing 1 stores the basic drawing figure data, the drawing processing program, the data of the drawing reference point in the case of editing such as figure deletion, and all the data necessary for drawing processing such as the editing program. Is stored.
  • the mouse 3, tablet 4, and electronic pen 5 are used to draw and erase figures on the CRT 2 screen.
  • the figures input to the computer 1 can be printed by a printer (not shown) as required.
  • Editing (erasing) a drawn figure is the same as drawing a new figure excluding the erased area.
  • the figure to be edited is a figure whose start point and end point are different, such as a line segment or a polygon composed of line segments, or a figure whose start point and end point are the same, such as a circle or an ellipse If it is determined and the part between the start point and the end point of the figure whose start point and end point are different is to be deleted, the figure segmentation process is performed in the deletion area, line segment data is read out, and a new drawing is performed. When deleting from the start point to the intermediate point or from the intermediate point to the end point, the figure is not divided.
  • the figure When erasing a figure whose start point and end point are the same, the figure is erased by performing a change process to the figure excluding the erasure area, reading out the arc or elliptical arc data, and drawing new. . Also, set the erase snap range for the erasure reference point such as the intersection point of the figure, the drawing center of the circle, ellipse, arc or elliptic arc, and the line to be erased is _
  • the line segment data excluding the erased area is read out and inserted to erase the figure in the erased area.
  • the figure up to the erasure reference point is erased.
  • an icon such as an edit menu is not displayed around a screen or a tablet, and a command area is provided on a drawing window (not shown).
  • the erase mode will be set. If you select the write operation, the cursor will change to an eccentric shape, and if you select the erase operation, the cursor will change to the eraser type.
  • the erasing operation has the same operation feeling as the writing operation by tracing the figure.
  • FIG. 2 is a diagram illustrating an example of line division (erasing up to two intersections).
  • line division erasing up to two intersections.
  • four straight lines AB, CD, EF, and GH intersect at intersections P1 to P4. If part or all of the line segment between the intersections is deleted, each intersection is deleted. It becomes a reference point.
  • the figure erasing mode is selected, the repetitiously.
  • An erase snap range R is set nearby (Fig. 2 (f)).
  • the computer recognizes that the figure is an unclosed figure, and the point sequence of the traced area K (the thick line in the figure) Is obtained, it is determined whether or not the area K intersects with the erase snap range, and the dividing process is performed on the straight line AB.
  • the straight line AB is divided from the point A to the intersection Pl and from the intersection P2 to the point B, and the line segment The data is read, the new line is drawn, and the line from intersection P1 to intersection P2 is erased (Fig. 2 (b)).
  • Fig. 2 (b) when a part of the straight line CD (between the intersections P3 and P4) is traced with the cursor, the coordinates of the point sequence of the traced area K are obtained, and the erased area is processed in the same manner as the straight line AB.
  • FIG. 3 is a diagram illustrating an example of line division (combination of tracing and elimination up to one intersection). Also in this example, four straight lines AB, CD, EF, and GH intersect at intersections P1 to P4, and when erasing part or all of the line segment between the intersections, each intersection is erased. It becomes a reference point. Select the figure erasing mode and set the erasing snap range. When a part of the straight line AB (between the intersections P1 and P2) is traced with a force sol (Fig. 3 (a)), the computer recognizes that this is an unclosed figure and traces it.
  • Fig. 4 is a diagram illustrating an example of straight line division (elimination of traced portions). Also in this example, four straight lines AB, CD, EF, and GH intersect at intersections P1 to P4, and when erasing part or all of the line segment between the intersections, each intersection is erased. It becomes a reference point. Select the figure erasing mode and set the erasing snap range. When a part of the straight line AB (between the intersections P1 and P2) is traced with a force sol (Fig. 4 (a)), the computer recognizes that this figure is an unclosed figure and traces it.
  • FIG. 5 is a diagram illustrating an example of dividing a straight line passing through the center of a circle.
  • the center is also the erasure reference point, and by setting the erasure snap range at the center, the same processing as in the case of the intersections in FIGS. 2 to 4 is performed.
  • Fig. 5 (a) when a traced part of a straight line L passing through the center O of the circle is traced and the traced area K is outside the erase snap range near the center O of the circle, the trace is performed. If only the touched area is erased (Fig. 5 (b)), and the traced area K is within the erase snap range near the center O of the circle (Fig.
  • FIG. 6 is a diagram illustrating an example in which a circle and a straight line intersect and part of an arc is deleted. ⁇ .
  • each intersection is the erasure reference point, select the graphical erasure mode, and set the erasure snap range.
  • the computer recognizes that this figure is a closed figure, and at the same time, calculates the coordinates of the point sequence of the traced area K (the thick line in the figure). Then, it is determined whether or not the region K intersects with a predetermined range near the intersection, and the circle is subjected to a graphic change process.
  • the traced area K intersects the erase snap range near the intersections Q 1 and Q 2, so that the intersection Q 1 is the start point, the intersection Q 2 is the end point, and the center O is the drawing reference point and the radius is the same as the circle.
  • Change the shape to an arc (Fig. 6 (b)).
  • the portion of the arc C from the intersections Q1 to Q2 is deleted.
  • FIG. 7 is a diagram illustrating an example of changing a circle into two arcs.
  • the tracing is performed linearly so as to pass through the center of the circle, and as shown in Fig. 7 (b), the intersection Q1 between the tracing straight line K and the circle is obtained.
  • the shape is changed to two arcs with Q2 as the start point, end point, and center O as the drawing reference point.
  • FIG. 7 (b) for clarity, the example is illustrated by ⁇ ⁇ from the actual distance.
  • the traced portion is erased by tracing along the figure with an eraser.
  • the operation of tracing along the figure may be complicated. Therefore, in the present invention, as shown in FIG. 8, for example, when it is desired to erase the line segment ⁇ , when the trajectory of the eraser passes through the start point ⁇ and the end point Q, it may be erased.
  • the figure (circumference of the figure) is calculated as a single solution and the slope of the figure is added as a parameter. It is possible to set a reference point.
  • the ellipse is determined by the length of the short axis and the length of the long axis. Set the intersection of the short axis and long axis as the erase reference point and set the erase snap range. Therefore, the ellipse partial elimination method is the same as the circle elimination method.
  • FIG. 9 is a diagram illustrating an example of erasing by a grid.
  • the grid has an erasure snap range set, and the erasure reference point at the center is a virtual point (coordinate) for drawing and editing, and is arranged at regular intervals G (X, Y).
  • Line segment AB is located at G11-14, and similarly, line segment CD and EF are located at G21-24 and G31-34 (Fig. 9 (a)).
  • an eraser operation (K) is performed on each line segment.
  • each line segment is as follows.
  • Line segment AB is a straight line from G12 to G14
  • line segment CD is divided into two straight lines from G21 to G22 and G23 to G24
  • line segment EF is G31 and G A straight line from the middle of 32 to G34 (Fig. 9 (c)).
  • This processing starts when the erase mode is set by the erase command.
  • the figure to be erased is determined from the coordinates input by the eraser (step S1). Then, it is determined whether or not there is a figure in the erasing area input by the eraser (step S2). If there is no figure, the erasing process ends. If there is a figure in the erasure area, it is determined whether the figure has the same start point and end point (step S3). If the figure is not the same as a line segment, the eraser input coordinates are changed to the coordinates on the figure to be erased. (Step S 4), and figure division determination is performed (step S 5).
  • step S6 it is determined whether or not the figure is to be divided. If the figure is to be divided, a dividing process is performed (step S7). If the start point and the end point are the same, such as a circle, similarly, the eraser input coordinates are converted to coordinates on the figure to be erased (step S8), and figure change processing is performed (step S9). Next, it is determined whether or not an erase snap area (snap) has been set (step S10).
  • step S6 it is determined whether or not the figure is to be divided.
  • the center of the erase snap area (the erase reference point) is the intersection point of a figure, the center of a circle or ellipse, an arc or an elliptical arc, or a reference point for drawing a new figure such as a grid point.
  • the snap area is set by the user's instruction. If the erase snap area (snap) has been set, the range of the erase snap is calculated (step S11).
  • the erase snap range is calculated using the display scale as a parameter on the screen to be operated. In other words, when the display is reduced, the erase snap range is reduced, and when the display is enlarged, the erase snap range is increased.
  • Step S12 it is determined whether the type of the erasure reference point is the intersection, the center, or the grid of the figure (step S12), and if it is the intersection (step S13), and if it is the center.
  • Step S14 In the case of a grid (Step S15), the drawing coordinates are calculated. In this process, when the erase area and the erase snap range overlap, the erase reference point is used as the drawing reference point, and when the erase area and the erase snap area do not overlap, the erase area is used as the drawing reference point. . If the erase snap is not set in step S10, the drawing coordinates are calculated based on the coordinates of the traced area. The graphic is erased by drawing the graphic based on the calculated drawing coordinates.
  • the size of the cursor for drawing the erasure area can be changed. By changing the size, the erasure operation can be performed efficiently.
  • a horizontal / vertical wipe operation may be used as the eraser operation. In other words, by selecting any two points and moving the line connecting the two points horizontally or vertically, the figure or part of the figure selected during the movement is erased. Is also good.
  • a rotary wipe operation may be used as the eraser operation. In other words, two arbitrary points may be selected, rotated about either of the two points, and the selected figure or part of the figure may be deleted during the movement.
  • the erasing process may be performed by setting the erasing reference point and the erasing snap range, or all overlapping graphics may be erased. Good. If it is desired to delete all the figures, the figure may be selected and deleted. .
  • a writing operation and an erasing operation can be performed with the same operation feeling. It is possible to select the erase from the traced part to the erase reference point or the erase from the erase reference point to the erase reference point. The erasure area can be selected, and operability can be improved.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Processing Or Creating Images (AREA)

Abstract

L'invention permet d'obtenir une utilisation facilitée par sélection arbitraire d'une zone à effacer de manière manuscrite sans opération compliquée en vue de l'effacement d'un motif. L'invention concerne un système destiné à éditer un motif par entrée manuelle et comprenant une unité d'entrée manuelle (3, 4 et 5) destinée à entrer une zone à éditer, une unité d'évaluation de motif (1) permettant d'établir si le point de début du motif à éditer est le même que son point de fin, une unité de séparation/modification de motif (1) servant à séparer ou modifier ce motif et à déterminer si la séparation est réalisée selon le résultat de l'évaluation du motif et la zone à éditer, une unité de calcul de coordonnées de dessin (1) destinée à calculer les coordonnées de dessin en déterminant si une zone d'effacement de motif est définie, en identifiant le type de point de référence pour l'effacement et en déterminant si la zone à éditer se trouve à l'intérieur de la zone d'effacement définie, ainsi qu'une unité de dessin (1) destinée à dessiner un motif en vue d'une mise à jour sur la base des coordonnées de dessin calculées.
PCT/JP2002/004353 2001-05-07 2002-05-01 Systeme d'edition de motif par entree manuelle WO2002091304A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001136250A JP2005234610A (ja) 2001-05-07 2001-05-07 手書き入力図形編集システム
JP2001-136250 2001-05-07

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WO2002091304A1 true WO2002091304A1 (fr) 2002-11-14

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105574907A (zh) * 2015-12-18 2016-05-11 广州视睿电子科技有限公司 信息处理方法及装置
CN112419453A (zh) * 2020-11-19 2021-02-26 山东亚华电子股份有限公司 一种基于Android系统的手写方法及装置
CN114063859A (zh) * 2021-10-27 2022-02-18 湖南新云网科技有限公司 一种擦除图形的方法、电子设备和存储介质

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5657269B2 (ja) * 2010-04-26 2015-01-21 シャープ株式会社 画像処理装置、表示装置、画像処理方法、画像処理プログラム、記録媒体

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05108786A (ja) * 1991-10-01 1993-04-30 Internatl Business Mach Corp <Ibm> 図形の変形方法及び装置
JPH07219701A (ja) * 1994-01-28 1995-08-18 Sony Corp 手書き入力装置
JPH09190545A (ja) * 1996-01-10 1997-07-22 Canon Inc 図形処理装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05108786A (ja) * 1991-10-01 1993-04-30 Internatl Business Mach Corp <Ibm> 図形の変形方法及び装置
JPH07219701A (ja) * 1994-01-28 1995-08-18 Sony Corp 手書き入力装置
JPH09190545A (ja) * 1996-01-10 1997-07-22 Canon Inc 図形処理装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105574907A (zh) * 2015-12-18 2016-05-11 广州视睿电子科技有限公司 信息处理方法及装置
CN112419453A (zh) * 2020-11-19 2021-02-26 山东亚华电子股份有限公司 一种基于Android系统的手写方法及装置
CN114063859A (zh) * 2021-10-27 2022-02-18 湖南新云网科技有限公司 一种擦除图形的方法、电子设备和存储介质

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