JP2001043390A - Image processing device and method, and recording medium recording image processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To draw a gradation along a freely drawn curve in variable gray level or a color and also to freely set the color width of the gradation, the processing to be executed when the colors overlap each other and the direction of the gradation set to the segment of the drawn curve, i.e., the change from shade to light or vice versa. SOLUTION: The areas of both sides of a freely drawn curve 51 or one of these two areas are colored by drawing gradations on the basis of prescribed or designated colors. The normal width of the curve 51 suitable for the coloring width of the same color is decided and then the normal coordinates are decided on the curve 51 according to the decided normal width. The start and end colors are set and the color difference is decided per coloring from the start and end colors and the length and width of the curve 51. Then the gradations are drawn along the curve 51 and in the areas of both sides of the curve 51 or in one of these two areas by means of the color difference. If the drawing areas overlap each other, one of both areas where a gradation is already drawn has preference to the other and the gradation is never drawn again there.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus and an image processing method capable of drawing gradation of light and shade and color, and a recording medium on which an image processing program is recorded, and more particularly to a technique for easily drawing gradation of a curve. .

[0002]

2. Description of the Related Art A gradation in which the color or density is continuously changed is called gradation. Gradation is 3D CG
It is also used when shading spheres, cylinders, free-form surfaces, etc. in (computer graphics). As described above, in the past, there was a type in which gradation drawing of shades or colors could be drawn by processing an image of a personal computer or the like.
The direction of the gradation change is a straight line, and in order to perform the gradation on the curve, it is necessary to perform processing such as once transforming a linearly drawn gradation into a curve.

[0003]

However, as described above, the prior art which requires a process of once drawing a gradation with a straight line and transforming it into a curve is a method of freely drawing a curve and applying a gradation along the curve. And the degree of freedom was low.

[0004] The present invention has been made in view of the above points, and an object of the present invention is to draw a gradation in shades or colors along a curve freely drawn by a user, and to set the width and color of the gradation. It is intended to be able to freely perform processing when they overlap with each other, and set the direction of gradation with respect to the line segment of the drawn curve, that is, change from dark to light and light to dark.

[0005]

To achieve the above object, according to the present invention, an image input means for inputting an image, an image storage means for storing the image input from the image input means, Image display means for reading and displaying the image stored by the image storage means; line drawing means for drawing a line on the image displayed by the image display means; and line drawing means for drawing a line on the image drawn by the line drawing means. Coloring means for coloring in a gradation drawing based on a predetermined color or a designated color on both sides or one side of the line along the line.

Here, the line may be a curve drawn arbitrarily or a line including a curve.

Further, the coloring means determines a normal width of a curve drawn by the line drawing means corresponding to a width of coloring the same color, and calculates a normal of the curve according to the determined normal width. Means for determining line coordinates, means for setting the start color and end color of the gradation, coloring from the set start color and end color, the length of the curve drawn by the line drawing means, and the normal line width Means for determining a color difference per time, the normal coordinates,
Means for drawing a gradation on the both sides or one side of the curve along the curve using the start color and the color difference.

[0008] The means for drawing a gradation on both sides or one side of the curve may be characterized in that when the drawing areas overlap, the already drawn area has priority and is not drawn.

[0009] The means for drawing a gradation on both sides or one side of the curve may be characterized in that, even when the drawing areas overlap, the gradation is drawn on the already drawn area.

In addition, when the gradation is drawn, when the drawing areas overlap, the drawing is not performed with priority on the already drawn area, and when the drawing areas overlap, the drawing area is overlapped on the already drawn area. Means for selecting and setting one of the cases to be drawn before drawing the curve, and drawing a gradation according to the selection result by the means in a region on both sides or one side of the curve. Performing can be characterized.

Further, the coloring means has means for determining a middle point of the curve drawn by the line drawing means, and draws the image symmetrically around the middle point where the gradation is determined. Can be.

Further, instead of the line drawing means and the coloring means, while drawing a line on the image displayed by the image display means, an area on both sides or one side of the line along the drawn line is drawn. And a line drawing / coloring means for sequentially coloring by gradation drawing based on a predetermined color or a specified color.

The line drawing / coloring means may include a start color of the gradation, a color difference per coloration, a normal line width of a curve corresponding to a width for coloring the same color, and a start of curve drawing. Determining means for determining a start position, line drawing means for drawing a curve next, and then determining a wide normal based on the normal width when the curve has advanced a predetermined distance, Color drawing means for drawing in the normal line width of the start color stored in the storage means with a color corresponding to the color code which is the initial value; and the color storage means stored in the storage means Means for adding the difference to a code.

Further, when the gradation is drawn, when the drawing areas overlap, the drawing is not performed with priority on the already drawn area, and when the drawing areas overlap, the drawing area is overlapped on the already drawn area. Means for selecting and setting either one of drawing and drawing before the curve is drawn, and drawing the gradation according to the selection result by the means on both sides or one side of the curve. It can be characterized in that it is performed by drawing / coloring means.

Further, in performing the coloring of the predetermined color or the designated color, a gradation of light and shade may be provided along the line in a direction perpendicular to the line.

Further, a gradation of color may be drawn instead of the gradation of light and shade.

In order to achieve the above object, a thirteenth aspect of the present invention provides an image inputting step of inputting an image, an image storing step of storing the image input in the image inputting step, and an image storing step of storing the image. An image display step of reading and displaying the image, a line drawing step of drawing a line on the image displayed in the image display step, and both sides of the line along the line drawn in the line drawing step Alternatively, there is provided a coloring step of coloring in one side area by gradation drawing based on a predetermined color or a specified color.

According to a twenty-fifth aspect of the present invention, there is provided a recording medium storing an image processing program for causing a computer to execute gradation drawing, the program causing the computer to input an image, and An image is stored, the stored image is read out and displayed, a line is drawn on the displayed image, and a predetermined color or designated area is drawn along the drawn line on an area on both sides or one side of the line. It is characterized by being colored by gradation drawing based on the color.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a configuration example of an image processing apparatus according to an embodiment of the present invention. Here, reference numeral 1 denotes a central processing unit (CPU), which is connected to various devices described below through a bus line (BL) 6 and controls the device. A keyboard (KB) 2 has function keys and character input keys for instructing and executing various controls. Reference numeral 3 denotes a color LCD (liquid crystal display), which is a VRAM (video RAM) that is a write-only memory for display.
The characters, images, and graphics written in 4 are displayed as font patterns or image images described later.

Reference numeral 5 denotes a hard disk (HD), which is an external storage device, and stores characters, images, and figures. Reference numeral 7 denotes a ROM that functions as a read-only memory.
a shows a program (PRG) for executing the image processing according to the present invention, which has a procedure as shown in FIGS. 6, 8, and 10;
And a font pattern (FONT) such as characters, symbols, and ruled lines is stored in the area 7b.

Reference numeral 8 denotes an RA functioning as a writable memory.
M, which is used for storing image information and as a temporary work area and a save area when executing a program. RAM
The inside of 8 is divided into several areas indicated by 8a to 8i as described below.

The area 8a is a work area (WOR) for temporarily storing program variable data, constant data, and other information for operating the above-described program.
K). The area 8b is an image area (IMG) for storing image data. The area 8c is an area for storing an X, Y coordinate table for storing the coordinates of the curve.

The area 8d is a color code area (COLOR) for storing a color code. The area 8e is an area for storing a start color code (SC) for storing a first color code for drawing a line. The area 8f is an area for storing an end color code (EC) for storing the last color code when drawing a line. The area 8g is an area for storing the length (L) of the line. The area 8h is an area for storing a gradation width (ΔL). The area 8i is an area for storing a pointer (XYPOI) of the XY coordinate table of the area 8c.

Reference numeral 9 denotes a printer for printing text (PR
T).

FIG. 2 shows the structure of a color code and an XY coordinate table used in this embodiment. FIG. 2A shows the structure of a color code. The color code is composed of three bits of yellow (Y), magenta (M), and cyan (C), each having 4 bits, and a total of 12 bits.

FIG. 2B shows the structure of the XY coordinate table. The XY coordinate table is composed of X ₁ , Y ₁ , X ₂ , and Y from the top.
_{2. The} address number is attached.

FIG. 3 shows a state in which a curve is drawn on a display screen executed in an embodiment of the present invention. Here, 31 is a start point, 32 is an end point, and 33 is a curve drawn between these points 31 and 32.

FIG. 4 and FIG. 5 show the principle of the drawn curve shown in FIG. 3 and the gradation in the direction perpendicular to the drawn curve.

FIG. 4 shows a relationship between a curve 41 and a line 42 perpendicular to a certain point (X, Y) on the curve, and this line 42 is called a normal line. However, since the normal has no width, a gradation cannot be drawn as it is.

Therefore, in the present invention, as shown in FIG.
Gradient drawing is enabled by giving the normal lines a width. First, (X ₃ , Y ₃ ) and (X _3
4 , Y ₄ ), and the length 56 of a line segment connecting these two points with one straight line is ΔL which corresponds to the width of the normal line centered on the position 59. Lines 52 and 53 which are respectively parallel to the straight line at right angles (hereinafter referred to as parallel lines) are drawn, and coloring by gradation is applied to a band-like region between these lines 52 and 53, that is, inside a normal line having a width. I do.

When a band-like region extending from the next width ΔL, that is, the coordinates (X ₄ , Y ₄ ) and the coordinates (X ₅ , Y ₅ ), is drawn by gradation, the inside of the curve 51 (bending side) is drawn. , A portion 58 overlapping the previous region is generated. There are two methods for individual processing for the overlapping portion as described later, and these will be described in detail in the following embodiments.

On the outside of the curve 51, there is a portion 57 where the color is not painted as it is. However, this part 57
To The same color as the color of the area surrounded by the two normal lines 54 and 55 may be used.

[0034]

Next, referring to the drawings, a gradation drawing method according to the present invention will be specifically described based on four embodiments. The outline of these examples is as follows.

(1) Embodiment 1: First, a curve is drawn, a normal line width is determined, XY coordinates according to the normal line width are determined, a start color and an end color are set, and a color difference is determined. And draw a gradient. If the drawing areas overlap, the area already drawn has priority.

(2) Embodiment 2: The midpoint of the curve is determined, and the gradation is drawn symmetrically around the midpoint.

(3) Embodiment 3: When drawing a gradation, if it overlaps with the already drawn area, it is drawn in an overlapping manner.

(4) Embodiment 4: A color difference is determined in advance, and gradation is sequentially drawn while drawing a line. This is different from drawing the gradation after drawing all the lines as in the first embodiment.

(Embodiment 1) First, the operation of the apparatus (such as the CPU 1 in FIG. 1) in Embodiment 1 of the present invention will be described with reference to the flowchart in FIG.

First, the user sets a start position (31 in FIG. 3) for drawing a curve on the display screen of the LCD 3, and
U1 stores the coordinates in the work area (WORK) of the RAM8.
8a are stored in the coordinate areas X ₁ and Y ₁ (step S60).
1).

Next, the user freely draws a curve on the display screen of the LCD 3, and the CPU 1 controls the display of the curve and, at the same time, stores the coordinates of the curve each time in the coordinate area X of the work area (WORK) 8a of the RAM 8. _i and Y _i sequentially (step S602). As a drawing unit, a mouse cursor may be used with a mouse (not shown), or drawing may be performed with a screen touch pen (not shown). Thereafter, the user sets the end position of the curve (32 in FIG. 3) and ends the curve drawing work, and the CPU 1 stores the coordinates of the end position in the coordinate area X of the work area (WORK) 8a of the RAM 8.
_n, and stores it in the Y _n (step S603).

Next, the width of the normal line is determined. As shown in FIG. 4, the normal line is a line 42 orthogonal to the drawn curve 41, and the normal line has a width. The actual method of performing the operation is as shown in FIG. A reference numeral 59 on the drawn curve 51 in FIG. 5 is a center point for drawing a normal line having a width, and 56 is a width of the normal line centered on the point 59.

That is, the CPU 1 determines the normal width of the width ΔL centering on the above 59 points, and stores this value in the RAM 8.
It is stored in the L area 8h (step S604).

Next, the CPU 1 determines the normal line coordinates one after another based on the width ΔL, and stores them in the XY coordinate area (hereinafter referred to as a coordinate table) 8c of the RAM 8. The normal coordinates are the intersections of the curve 51 and the two parallel lines 52 and 53 forming both sides of the normal when the normal on the point 59 has the width ΔL. Referring to FIG. 5, (X ₁ , Y ₁ )
Is the start position, but (X ₂ , Y ₂ ), (X ₃ ,
Y ₃ ) are normal coordinates (step S606).

Next, the user sets a start color and an end color, and the CPU 1 stores these color codes in the start color code (SC) area 8 of the RAM 8 respectively.
e, stored in the end color code (EC) area 8f.
The color code is 12 bits shown in FIG. 2A (step S606).

Next, the CPU 1 operates the coordinate table 8c (FIG. 2).
The pointer (XYPOI) 8i is set to 1. The 1 indicates the first normal coordinate (X ₁ , Y ₁ ), and the 2 similarly indicates the next normal coordinate (X ₂ , Y ₂ ). The same applies to the following (step S607).

The above-mentioned various setting processes are completed, and the following is a loop process for actually drawing gradation.

First, based on the normal coordinates indicated by the pointer (XYPOI) 8i, the inside of the normal having a line width ΔL (between a pair of parallel lines forming the line width ΔL) is stored in the color code area ( (COLOR) 8d is drawn in a color according to the color code stored in the color code. However, drawing is not performed in the already drawn area (58 in FIG. 5). Therefore, based on the position of the previously used parallel line (53), it is determined whether or not the area to be drawn this time is an area in which the gradation has already been drawn, and the drawing is performed only in the negative determination area. . The initial value of the color code area (COLOR) 8d is, of course, the start color code (step S608).

Next, the color code stored in the color code area (COLOR) 8d is changed. At this time, since the start color and the end color have already been set in the SC area 8e and the EC area 8f, the color difference is calculated based on the set colors by dividing the total number of points of the curve for performing the gradation drawing. Is determined, and the difference is successively added to the start color value to determine a color update value. As a result, the colors to be drawn can be updated one after another corresponding to the coordinate positions where the drawing is performed so that the colors change smoothly and continuously from the start position to the end position of the curve (step S609).

Next, the coordinate table pointer (XYPO
I) 8i is incremented by 1 (step S610), and the value of the coordinate table pointer (XYPOI) 8i is compared with the final coordinate area of the coordinate table 8c, whereby gradation is drawn to the end point of the curve (32 in FIG. 3). Is determined (step S611), and if not completed, the process returns to step S608 and returns to step S608.
The processing from step 608 to step S611 is repeated, and if the processing is completed, the rendering processing of the gradation is completed.

The gradation in this embodiment is not limited to a change in color but also a change in density (shade). Further, the change in color includes at least one change in hue, saturation, and brightness. The colors include achromatic colors (white, black, and gray) in addition to chromatic colors.

Further, in the present embodiment, step S602
In WORK8, the coordinate values of the curve drawn by the user
Then, in step S605, the normal coordinates are determined, and the determined normal coordinates are stored in the X, Y coordinate area 8c.
However, the present invention is not limited to this. For example, coordinates of a curve drawn on a display screen are extracted at a constant interval (timing) corresponding to the normal line width ΔL, and are extracted as normal line coordinates. The same can be achieved by sequentially storing the data in the X and Y coordinate areas 8c. In this case, similarly to the above embodiment, the coordinates of the pair of parallel lines can be easily obtained from the pair of normal coordinates by calculation.

(Second Embodiment) In the first embodiment of the present invention, the gradation changes uniformly from the start point to the end point of the curve. However, the change of the gradation can be reversed at the middle point of the curve. is there. For example, 71 shown in FIG. 7 is the start point of the curve, 72 is the end point of the curve, and 73 is the middle point of the curve. From the start point 71 to the middle point 73, for example, a gradation that changes from a pale color to a dark color is added. From the point 73 to the end point 72, a gradation that changes from a dark color to a light color can be applied.

In addition to the above, the gradation change in this case includes a change from a dark color to a light color and vice versa, and a change from a cool color to a warm color and vice versa at the middle point of the curve. Change from black to white or gray and vice versa.

The drawing operation will be described with reference to the flowchart of FIG. The first processing is the same processing as steps S601 to S606 in the flowchart of FIG. 6, that is, the same processing up to the determination of the start color / end color. However, the determination in step S606 corresponds to the determination of the start color and the end color from the start point to the middle point of the curve (step S800).

Next, the coordinates near the middle point of the drawing curve among the normal line coordinates are regarded as the middle points, and the coordinates are stored in a predetermined area of the WORK 8a (step S801).

Pointer of coordinate table (XYPOI)
8i is set to 1 (step S802).

The following is a loop process. First, based on the normal coordinates on the coordinate table 8c indicated by the coordinate table pointer (XYPOI) 8i, the inside of the normal having a width is set to the color code stored in the COLOR 8d. Draw in the color according to. However, similarly to the first embodiment, the image is not drawn in the already drawn area (step S803).

Next, the color code of COLOR 8d is changed. Since the start color and the end color have been determined in step S606, the color difference is determined by dividing the start point of the curve and the number of coordinates of the middle point of the curve, and the difference is added one after another. Update code sequentially. Thereby, the color is smoothly changed from the start position of the curve to the midpoint position (step S804).

Next, the coordinate table pointer (XYPO
I) 8i is incremented by 1 (step S805), and it is determined whether or not the value of the coordinate table pointer 8i corresponds to the middle point of the curve (step S806). If the value is the middle point, the process proceeds to step S807. If not, the flow returns to step S803 to loop.

In the case of the middle point, the latter half is drawn. First, the coordinate table pointer (XYPO
I) Based on the normal coordinates on the coordinate table 8c specified by 8i, the inside of the wide normal is drawn in a color according to the color code stored in the COLOR 8d. However, as in the first embodiment, the image is not drawn in the already drawn area (step S807).

Next, the color code of COLOR 8d is changed. This time, the above difference is subtracted from the color code of COLOR 8d. Thus, the direction in which the gradation changes can be reversed from the previous direction (step S808).

Next, the coordinate table pointer (XYPO
I) 8i is incremented by 1 (step S809), and the value of the coordinate table pointer (XYPOI) 8i is compared with the coordinate table 8c to determine whether the gradation drawing is completed up to the end point of the curve (32 in FIG. 3). (Step S810), and if not completed, the flow returns to Step S807 to repeat the processing from Step S807 to Step S810. If completed, the gradation rendering processing ends.

(Embodiment 3) Embodiment 1 of the present invention described above,
In 2, in the drawing, the drawing is not performed at the place where the drawing is already performed, but it is also possible to perform the drawing at the place where the drawing is already performed. For example, as shown in FIG.
Reference numerals 2 and 93 denote normals having a width, respectively, and 94 denotes a normal 9
1 is where the normal 92 overlaps, and 95 is where the normal 93 further overlaps. Such overlapping parts are expressed deeply.

(Embodiment 4) In Embodiments 1 and 2 of the present invention described above, the gradation is drawn after the curve is drawn. However, the gradation can be drawn while the curve is drawn.

In this case, it is necessary to determine the difference between the normal line width and the color in advance before drawing the curve.

FIG. 10 is a flowchart showing this process. First, the user sets a start color according to the operation menu, and the CPU 1 stores the start color in the SC area 8e (step S1001). The user sets a color difference and the CPU 1 stores this in the WORK 8a (step S1001). S1002), the user sets the normal line width and sets C
PU1 stores this in the ΔL area 8h (step S10).
03), the user determines a start position, and the CPU 1 stores this in the X, Y coordinate area 8c (step S100).
4). Since the setting of the end color and the end position is not necessary, it is not performed.

Thereafter, the CPU 1 enters a loop process.
First, the user draws a curve on the display screen (step S1005), and the CPU 1 determines a normal line based on the normal line width when the curve advances by a certain distance (step S10).
06). Since the normal line width has already been determined, the inside of the normal line width is drawn in a color corresponding to the color code of the COLOR area 8d (step S1007). Thereafter, the difference is added to the color code (step S1008), and it is determined whether or not the curve drawing is completed. If the curve drawing is continued, the process returns to the curve drawing in step S1005 (step S100).
9).

In the above process, gradation can be drawn while drawing a curve.

(Other Embodiments) In the above-described third embodiment of the present invention, the direction of the gradation is reversed at the middle point of the drawn curve. Or a plurality of reversal points.

Further, in each of the embodiments of the present invention described above, the configuration and the difference of the color code are color, but may be monochrome.

Further, since the curve to which the present invention is applied is a completely free curve, it may be a closed curve like a circle or may intersect in a complicated manner many times. Further, a combination of a straight line and a curve or a perfect straight line can be applied to the present invention.

The present invention can be applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, a printer, etc.).
The present invention may be applied to a device including two devices (for example, a copying machine, a facsimile device, etc.).

Further, an object of the present invention is to provide a recording medium (storage medium) recording software program codes for realizing the functions of the above-described embodiments to a system or an apparatus, and to provide a computer of the system or the apparatus. Needless to say, the present invention is also achieved when the CPU (or the CPU or the MPU) reads out and executes the program code stored in the recording medium.

In this case, the program code itself read from the recording medium realizes the functions of the above-described embodiment, and the recording medium on which the program code is recorded constitutes the present invention.

As a recording medium for recording the program code and variable data such as a table, for example, a floppy disk (FD), hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, A nonvolatile memory card (IC memory card), a ROM, or the like can be used.

Further, when the computer executes the readout program code, not only the functions of the above-described embodiment are realized, but also the OS (Operating System) running on the computer based on the instruction of the program code. It goes without saying that an operating system) may perform some or all of the actual processing, and the processing may realize the functions of the above-described embodiments.

[0078]

As described above, according to the present invention, gradation can be drawn in both shades and colors along freely drawn curves, and the width of gradation colors, processing when colors overlap, and drawing are performed. The effect is obtained that the user can freely set the direction of the gradation on the line segment of the curve, that is, the change from dark to light and light to dark.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an image processing apparatus according to an embodiment of the present invention.

FIG. 2 is a memory map diagram showing a configuration of a memory in FIG. 1;

FIG. 3 is a schematic diagram illustrating a screen display example of curve drawing in the image processing apparatus according to the embodiment of the present invention;

FIG. 4 is a conceptual diagram showing a relationship between a drawn curve and a normal on the display screen of FIG. 3;

FIG. 5 is a conceptual diagram illustrating a method of sequentially creating normal lines having a constant line width with respect to a drawn curve on the display screen of FIG. 3, and applying gradation according to the present invention based on these normal lines. is there.

FIG. 6 is a flowchart illustrating a processing operation according to the first embodiment of the present invention.

FIG. 7 is a schematic diagram illustrating a screen display example according to a second embodiment of the present invention.

FIG. 8 is a flowchart illustrating a processing operation according to the second embodiment of the present invention.

FIG. 9 is a schematic diagram illustrating a screen display example according to a fourth embodiment of the present invention.

FIG. 10 is a flowchart illustrating a processing operation according to a fourth embodiment of the present invention.

[Explanation of symbols]

1 Central Processing Unit (CPU) 2 Keyboard (KB) 3 Liquid Crystal Display (LCD) 4 Video RAM (VRAM) 5 Hard Disk (HD) 6 Bus Line (BL) 7 Read-Only Memory (ROM) 7a Program (PRG) 7b Font pattern (FONT) 8 Random access memory (RAM) 8a Work area (WORK) 8b Image area (IMG) 8c X, Y coordinate area 8d Color code (COLOR) area 8e Star color (SC) area 8f End color (EC) Area 8g Line length (L) area 8h Gradation width (△ L) area 8i XY coordinate table pointer (XY POI) area 9 Printer (PRT) 31, 71 Curve start point 32, 72 Curve end point 33, 41 , 51 Curve 42 Normal 52, 53, 54 55, a parallel line constituting a wide normal line 57, a portion where the wide normal group does not overlap 58, a portion where the wide normal group overlaps 73, midpoint 91, 92, 93 wide normal 94 has a width Part where normal lines overlap once 95 Part where width normal lines overlap twice

Claims (36)

[Claims] 1. Image input means for inputting an image, image storage means for storing the image input from the image input means, and image display means for reading and displaying the image stored by the image storage means. Line drawing means for drawing a line on the image displayed by the image display means; and a predetermined color or a designated color in an area on both sides or one side of the line along the line drawn by the line drawing means A coloring means for coloring by gradation drawing based on the image processing apparatus. 2. The image processing apparatus according to claim 1, wherein the line is an arbitrarily drawn curve or a line including a curve. 3. The coloring means comprises: means for determining a normal width of a curve drawn by the line drawing means corresponding to a width of coloring the same color; and a method of calculating the curve according to the determined normal width. Means for determining line coordinates; means for setting the start color and end color of the gradation; coloring from the set start color and end color, the length of the curve drawn by the line drawing means, and the normal line width Means for determining a color difference per time; and means for drawing a gradation in the area on both sides or one side of the curve along the curve using the normal coordinates, the start color, and the color difference. The image processing apparatus according to claim 2, wherein the image processing apparatus includes: 4. The image according to claim 3, wherein the means for drawing the gradation on both sides or one side of the curve gives priority to the already drawn area when the drawing areas overlap, and does not draw the image. Processing equipment. 5. The apparatus according to claim 3, wherein the means for drawing the gradation on both sides or one side of the curve draws the drawing on the already drawn area even when the drawing areas overlap. Image processing device. 6. When the gradation is drawn, when the drawing areas overlap, the drawing area is not preferentially drawn, and when the drawing areas overlap, the drawing area is overlapped on the already drawn area. Means for selecting and setting one of the cases before and after drawing the curve, wherein the drawing according to the result of the selection by the means is performed in a means for drawing gradation on both sides or one side of the curve. The image processing apparatus according to claim 3, wherein the image processing is performed. 7. The method according to claim 1, wherein the coloring means has means for determining a middle point of the curve drawn by the line drawing means, and draws the image symmetrically around the middle point for which the gradation is determined. Item 7. The image processing device according to any one of Items 2 to 6. 8. An area on both sides or one side of the line along the drawn line while drawing a line on the image displayed by the image display means instead of the line drawing means and the coloring means. 3. The image processing apparatus according to claim 2, further comprising a line drawing / coloring unit for sequentially coloring the image based on a predetermined color or a designated color by gradation drawing. 9. The line drawing / coloring means includes: a start color of the gradation, a color difference per coloring, a normal line width of a curve corresponding to a width of coloring the same color, and a start of drawing of the curve. Determining means for determining a start position; next, line drawing means for drawing a curve; and then determining a wide normal based on the normal width when the curve advances by a certain distance, Color drawing means for drawing in the normal line width of the start color stored in the storage means with a color corresponding to the color code which is the initial value; and the color stored in the storage means 9. A means for adding the difference to a code.
An image processing apparatus according to claim 1. 10. When rendering the gradation,
When the drawing area overlaps, the curve is drawn using either the case where the already drawn area is not given priority and the case where the drawing area is overlapped and the area where the drawing is already performed. Means for selecting and setting before performing the line drawing and drawing for drawing a gradation on both sides or one side of the curve in accordance with the selection result by the means.
The image processing apparatus according to claim 9, wherein the image processing is performed by a coloring unit. 11. The method according to claim 1, wherein in performing the coloring of the predetermined color or the designated color, a gradation of light and shade is applied along the line in a direction perpendicular to the line. An image processing apparatus according to claim 1. 12. The image processing apparatus according to claim 11, wherein a color gradation is drawn instead of the gradation. 13. An image inputting step of inputting an image, an image storing step of storing the image input in the image inputting step, and an image displaying step of reading out and displaying the image stored in the image storing step. A line drawing step of drawing a line on the image displayed in the image display step; and a predetermined color or a specified color in an area on both sides or one side of the line along the line drawn in the line drawing step A coloring step for coloring by gradation drawing based on the image processing method. 14. The image processing method according to claim 13, wherein the line is an arbitrarily drawn curve or a line including a curve. 15. The coloring step includes: determining a normal width of a curve drawn in the line drawing step corresponding to a width for coloring the same color; and determining a normal of the curve according to the determined normal width. Determining a line coordinate; setting a start color and an end color of the gradation; coloring from the set start color and end color, a length of a curve drawn in the line drawing step, and the normal line width. Determining a color difference per time, The normal coordinates, the start color, the step of drawing a gradation along the curve using the color difference in the area on both sides or one side of the curve The image processing method according to claim 14, further comprising: 16. The image according to claim 15, wherein in the step of drawing the gradation on both sides or one side of the curve, when the drawing areas overlap, the already drawn area is prioritized, and the drawing is not performed. Processing method. 17. The method according to claim 15, wherein, in the step of drawing the gradation on both sides or one side of the curve, even if the drawing areas overlap, the gradation is drawn on the already drawn area. Image processing method. 18. When rendering the gradation,
When the drawing area overlaps, the curve is drawn using either the case where the already drawn area is not given priority and the case where the drawing area is overlapped and the area where the drawing is already performed. The method according to claim 15, further comprising the step of selecting and setting before performing the drawing, wherein the drawing according to the selection result in the step is performed in the step of drawing a gradation on both sides or one side of the curve. Image processing method. 19. The coloring step includes a step of determining a midpoint of the curve drawn in the line drawing step,
19. The image processing method according to claim 14, wherein the image is drawn symmetrically around the midpoint where the gradation is determined. 20. Instead of the line drawing step and the coloring step, while drawing a line on the image displayed in the image display step, an area on both sides or one side of the line along the drawn line 15. The image processing method according to claim 14, further comprising a line drawing / coloring step of sequentially coloring with gradation drawing based on a predetermined color or a specified color. 21. The line drawing / coloring step includes: a starting color of the gradation, a color difference per coloration, a normal line width of a curve corresponding to a width for coloring the same color, and a start of curve drawing. A determining step of determining a start position; a line drawing step of drawing a curve; and a wide normal determined based on the normal width when the curve has traveled a predetermined distance. A color drawing step of drawing a color within the normal width of the start color stored in the storage means with a color corresponding to a color code that is an initial value; and then storing the color stored in the storage means. 20. The method according to claim 19, further comprising: a step of adding the difference to a code; and a step of determining whether or not the curve drawing is completed, and returning to the curve drawing of the line drawing step if continuing. The image processing method of mounting. 22. When rendering the gradation,
When the drawing area overlaps, the curve is drawn using either the case where the already drawn area is not given priority and the case where the drawing area is overlapped and the area where the drawing is already performed. A step of selecting and setting before performing the drawing, wherein the drawing according to the selection result in the step is performed in the line drawing / coloring step of drawing a gradation on both sides or one side of the curve. Item 22. The image processing method according to Item 21. 23. The method according to claim 13, wherein, in performing the coloring of the predetermined color or the specified color, a gradation of light and shade is applied along the line in a direction perpendicular to the line. The image processing method according to 1. 24. The image processing method according to claim 23, wherein a color gradation is drawn instead of said gradation gradation. 25. A recording medium storing an image processing program for causing a computer to execute gradation drawing, wherein the program causes a computer to input an image, store the input image, and read out the stored image. And drawing a line on the displayed image, and coloring both sides or one side of the line along the drawn line by gradation drawing based on a predetermined color or a specified color. Recording medium on which an image processing program is recorded. 26. The recording medium according to claim 25, wherein the line is an arbitrarily drawn curve or a line including a curve. 27. The program causes a computer to set a normal width of the curve corresponding to a width for coloring the same color, and to set normal coordinates of the curve according to the set normal width. The start color and the end color of the gradation are set, and the set start color and the end color, the length of the curve, and the color difference per color from the normal line width are set, and the normal coordinates are set. 3. A gradation is drawn along the curve on both sides or one side of the curve using the start color and the color difference.
A recording medium recording the image processing program according to 6. 28. The program, when causing a computer to draw a gradation on both sides or one side of the curve, if the drawing areas overlap, give priority to the already drawn area and do not perform drawing. A recording medium on which the image processing program according to claim 27 is recorded. 29. The program, when causing a computer to draw a gradation on an area on both sides or one side of the curve, even when the drawing areas overlap, causes the computer to draw on the already drawn area. A recording medium recording the image processing program according to claim 27. 30. The program, when causing a computer to draw a gradation on both sides or one side of the curve, if the drawing areas overlap each other, the drawing area is not preferentially drawn. Is also selected before drawing the curve, and the drawing according to the selection result is performed on both sides or one side of the curve. 28. A recording medium recording the image processing program according to claim 27, wherein the recording is performed when a gradation is drawn in an area. 31. The program causes a computer to determine a middle point of a drawn curve when drawing a gradation on both sides or one side of the curve, and cause the computer to draw symmetrically around the determined middle point. A recording medium recording the image processing program according to any one of claims 26 to 30. 32. The program, when causing a computer to draw a gradation on both sides or one side of the curve, draws a line on the image, and draws a line on the both sides of the line or along the drawn line. 27. The recording medium according to claim 26, wherein the one side area is sequentially colored by gradation drawing based on a predetermined color or a designated color. 33. When the program causes the computer to draw a gradation on both sides or one side of the curve, a start color of the gradation, a color difference per coloring, and a width for coloring the same color. Is determined, and the start position of the start of drawing the curve is determined.Next, the drawing of the curve is performed. Next, when the curve advances a predetermined distance, the width is determined based on the normal width. The normal is determined, and the normal line width of the normal is drawn in a color corresponding to the color code of which the color code of the start color stored in the storage is an initial value, and then stored in the storage. By adding the difference to the color code that has been made, to determine whether the curve drawing is completed,
32. The recording medium according to claim 31, wherein the process is returned to the curve drawing process when continuing. 34. The program, when causing a computer to draw a gradation on both sides or one side of the curve, if the drawing areas overlap each other, do not give priority to the already drawn area. Is selected before drawing the curve, and the drawing according to the selection result is performed on both sides or one side of the curve. 34. A recording medium storing the image processing program according to claim 33, wherein the recording is performed when a gradation is drawn in an area. 35. The program, when causing the computer to execute the coloring of the predetermined color or the specified color, causes a gradation of light and shade to be applied along the line in a direction perpendicular to the line. A recording medium on which the image processing program according to any one of claims 25 to 34 is recorded. 36. The recording medium according to claim 25, wherein the program causes the computer to draw a color gradation instead of the gradation.