JP2013178798A - Image conversion device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement an image conversion device which easily converts a desired area of an original image into various tones without trimming.SOLUTION: A user terminal 10 designates an image area to be subjected to image conversion, in an original image by a window image. A picture conversion server 20 converts the image tone of the image area surrounded with the window image in the original image and pastes the image of the tone-converted image area to the image area surrounded with the window image and transmits the image to the user terminal 10. The image resulting from tone conversion of the area surrounded with the window image in the original image is displayed on the user terminal 10. Each time a prescribed time passes after designation of the window image arranged in the original image, the picture conversion server 20 changes a conversion algorithm parameter group for use in tone conversion. As a result, the area surrounded with the window image is converted to a tone changed at intervals of the prescribed time and is displayed by only designating the image area to be subjected to tone conversion in the original image by the window image.

Description

  The present invention relates to a tone conversion device and program for easily converting a desired area of an original image into various tone without trimming.

  A technique for converting an image into a painting style is known. As this type of technology, for example, in Patent Document 1, each part of an original image is modified to have more uniform luminance, saturation, and hue to express so-called brush strokes, or contrast edges in the original image. And a technique for converting an original image into an oil painting-like painting by correcting the brightness along the detected contrast edge and enhancing the contour line.

JP-A-8-44867

  By the way, when performing a tone conversion such as converting a desired image area in the original image into a painting style, the desired image area is first trimmed and cut out from the original image, and various tones (watercolor painting, oil painting) (Impressionism), oil painting (beast), gouache painting, pastel painting, etc.), the trimmed and cropped image area will be transformed into a tone. If the converted image does not match the intended image, it will be re-executed from the beginning, and an extremely complicated operation will be forced. That is, in other words, there is a problem that a desired area of the original image cannot be easily converted into various tone without trimming.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a tone conversion device and a program that can easily convert a desired area of an original image into various tone without trimming. It is said.

  In order to achieve the above object, according to the first aspect of the present invention, a region designating unit for designating a region of a desired size at a desired position in the original image, and a process after the region is designated by the region designating unit. A tone designating unit that sequentially designates different types of image tone according to time, an image conversion unit that converts the image of the designated area into the image tone designated by the image tone designating unit, And only the image in the designated region in the original image is sequentially converted into different types of image tone according to the elapsed time.

  In the invention according to claim 2 subordinate to claim 1, the image conversion means changes the size or position of the frame-shaped image in the original image surrounded by the frame-shaped image. The image area is not converted. Further, in the invention according to claim 3 that is dependent on claim 1 or 2, the area specifying means includes a plurality of area specifying means for specifying a plurality of areas in an original image, and the image tone specifying means includes The image processing apparatus includes a plurality of image tone designating means for designating different image tones for the plurality of areas designated by the plurality of area designating means.

According to the fourth aspect of the present invention, the computer designates an area designating step for designating an area of a desired size at a desired position in the original image, and an elapsed time after the area is designated by the area designating means. An image designating step for sequentially designating different types of image tone, and an image conversion step for converting the image in the designated area into the image tone designated by the image tone designating means, Only the image in the designated area in the original image is sequentially converted into different types of image tone according to the elapsed time.
The invention according to claim 5 is a system comprising a terminal device and a server connected to the terminal device via a network, wherein the terminal device has a desired size at a desired position in the original image. An area designating unit for designating an area of the image, and an image designating unit for designating different types of image tones sequentially in accordance with an elapsed time since the area was designated by the area designating unit, Image conversion means for converting the image in the designated area into the image tone designated by the image tone designation means, and only the image in the designated area in the original image is subjected to an elapsed time. It is characterized in that it is converted into different types of image tones sequentially.

  In the present invention, a desired area of an original image can be easily converted into various image tones without trimming.

1 is a block diagram illustrating an overall configuration of a picture conversion system 100 according to an embodiment. 3 is a block diagram showing a configuration of a picture conversion server 20. FIG. It is a memory map which shows the memory structure of RAM20c. It is a figure for demonstrating the data format of image data. It is a figure which shows an example of a writing pattern. It is a flowchart which shows operation | movement of a terminal process. It is a flowchart which shows operation | movement of a server process. It is a flowchart which shows operation | movement of a server process. It is a flowchart which shows the operation | movement of an image conversion process. It is a flowchart which shows the operation | movement of a conversion process. It is a figure for demonstrating an example of operation | movement of an image conversion process. It is an image which shows an example of an original image (1). This is an image obtained by superimposing a window image on the original image (1). It is an example which converted the inside of the window image superimposed on the original image (1) into the oil painting. It is an image which shows an example of an original image (2). This is an image obtained by superimposing a window image on the original image (2). It is an example which converted the inside of the window image superimposed on the original image (2) into the oil painting.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. Configuration (1) System Overview (Summary of Invention)
FIG. 1 is a block diagram illustrating an overall configuration of a picture conversion system 100 according to an embodiment. A picture conversion system 100 shown in this figure includes a plurality of user terminals 10-1 to 10-N that access the picture conversion server 20 via the Internet. The user terminal 10 is composed of a personal computer having an Internet connection function and a browser function.

  When the user terminal 10 accesses the picture conversion server 20 via the Internet and moves the display page from the top page to the picture conversion page, the user terminal 10 receives the original image sent from the picture conversion server 20 and displays it on the screen. The original image refers to an original image subjected to painting-like transformation such as the original image (1) illustrated in FIG. 12 and the original image (2) illustrated in FIG.

On the picture conversion page, a plurality of original images (1) to (N) are displayed on the screen. In the user terminal 10, a window image whose frame size (size) and arrangement position can be changed according to a user operation is arranged in the original image to be subjected to painting-like conversion from among these original images (1) to (N). To do. Specifically, as shown in FIG. 13, a window image surrounding the lower part from the center of the original image (1) is arranged, or as shown in FIG. 16, a window surrounding the lower right part of the original image (2). Place images.

  In the example shown in FIGS. 13 and 16, the window image is a black frame, but it is preferable to use a window image having a shape imitating a frame. That is, the window image arranged in the original image designates an image region to be subjected to painting-like conversion. Therefore, if the window image imitates a frame, it matches the image region that has undergone painting-like transformation.

When the user terminal 10 side thus designates an image area in the original image that is to be subjected to painting-like conversion by a window image, size data and position data representing the size and arrangement position of the frame of the window image are sent to the painting conversion server 20 side. The In the painting conversion server 20, the image area in the original image surrounded by the window image specified by the size data and the position data supplied from the user terminal 10 is subjected to painting-like conversion, and the image of the image area subjected to the painting-like conversion is converted into The user terminal 10 is pasted on the image area in the original image surrounded by the window image.
To send.

  As a result, the user terminal 10 displays the region surrounded by the window image in the original image as an image converted to oil painting as in the example illustrated in FIGS. 14 and 17. Then, the painting conversion server 20 changes with time a conversion algorithm / parameter group used when performing painting-like conversion on the image area in the original image specified by the size data and position data supplied from the user terminal 10. Specifically, according to the elapsed time from the time when the size and arrangement position of the window image frame to be arranged in the original image are specified, for example, in the order of “oil painting”, “watercolor painting”, “pastel painting” Different conversion algorithms and parameters are used for painting-like conversion.

  Therefore, the user terminal 10 simply designates an image area in the original image that is to be transformed into a painting-like image with a window image, and each time an area surrounded by the window image elapses for a predetermined time, an “oil painting”, a “watercolor painting” Since it is displayed in “Pastel” after being transformed into a painting style, the image area that was trimmed and cut out is transformed into a painting style as before, and if it does not match the intended image, it starts over from the beginning. As a result of eliminating the need for such complicated operations, it is possible to easily convert the desired area of the original image into various painting styles without trimming.

(2) Configuration of Painting Conversion Server 20 Next, the configuration of the painting conversion server 20 will be described with reference to FIGS. The painting conversion server 20 includes components 20a to 20e. The CPU 20a controls each part of the server in accordance with an operation event generated by the operation unit 20d. The processing operation (server processing) of the CPU 20a according to the gist of the present invention will be described in detail later. The ROM 20b stores various control programs and control data loaded into the CPU 20a. Various control programs include server processing described later.

  As shown in FIG. 3, the RAM 20c stores an original image data area GE, a window image area WE, a display area DE, a conversion source image area THE, a conversion image area TME, an area for storing position data PD, and size data SD. Area and a brush pattern area HE. In the original image data area GE, a plurality of original images (1) to (N) are stored. The plurality of original images (1) to (N) are copied to the display area DE as an image group displayed on the picture conversion page. Note that the images handled in the present embodiment are expressed in a known bitmap format including pixels P (1) to P (n × m) of n rows and m columns shown in FIG. Shall be.

  In the window image area WE, a window image with a black frame is stored as in the example illustrated in FIGS. 13 and 16, for example. The conversion source image area THE is a work area for painting-style conversion, and temporarily stores image data to be subjected to painting-style conversion, that is, image data of an area surrounded by window images arranged in the original image. In the converted image area TME, image data obtained by performing painting-like conversion on the image temporarily stored in the conversion source image area THE based on the conversion algorithm parameter is temporarily stored.

  In the area for storing the position data PD, position data PD representing the position of the window image arranged in the original image is stored. The position of the window image represented by the position data PD is, for example, the coordinate position of the upper left apex angle of the frame formed by the window image, and is received from the user terminal 10 side. In the area for storing the size data SD, size data SD representing the size of the window image arranged in the original image is stored. The size of the window image represented by the size data SD includes, for example, an aspect ratio (vertical / horizontal ratio) and a diagonal length of a frame formed by the window image, and is received from the user terminal 10 side.

  In the brush pattern area HE, a plurality of types of brush patterns HP (1) to HP (N) indicating a brush figure (touch shape) are stored. These stroke patterns HP (1) to HP (N) are obtained by converting the image stored in the above-mentioned conversion source image area THE (the image of the area surrounded by the window image arranged in the original image) into a pictorial image. Used when converting.

  For example, in the case of a stroke figure in an oil painting, the example stroke patterns HP (1) to HP (4) illustrated in FIG. 5 are registered in the stroke pattern area HE. The writing pattern HP (1) is composed of ten pixels that form the writing pattern 1. The brush pattern HP (2) is composed of 13 pixels forming the brush graphic 2. The writing pattern HP (3) is composed of 13 pixels that form the writing pattern 3. The brush pattern HP (4) is composed of nine pixels that form the brush graphic 4.

  The operation unit 20d includes input devices such as a keyboard and a mouse, and generates an operation event corresponding to the input. The operation event is captured by the CPU 20a. The communication unit 20e exchanges data with the user terminal 10 side accessed via the Internet under the control of the CPU 20a.

B. Action
Next, the operation of the embodiment having the above configuration will be described with reference to FIGS. Below, after explaining the terminal process which the user terminal 10 performs first, the server process which the painting conversion server 20 performs is demonstrated. The server process includes an image conversion process and a conversion process.

(1) Operation of terminal processing When the user terminal 10 composed of a personal computer having an Internet connection function and a browser function executes the terminal processing shown in FIG. 6, first, in step SA1, a network connection with the picture conversion server 20 is established. Perform server connection processing to be established. When the network connection with the painting conversion server 20 is established, the process proceeds to step SA2, and the top page provided by the painting conversion server 20 is displayed on the screen. Next, the process proceeds to step SA3, and when the page is moved from the top page to the painting conversion page according to the user operation, the process proceeds to step SA4, where it is determined whether the original image and the window image sent from the painting conversion server 20 are received. To do.

  When the display page is moved from the top page to the painting conversion page, since a plurality of original images (1) to (N) and a default window image are received, the determination result in step SA4 is “YES”. The original image and window image selected from among the plurality of original images (1) to (N) received from the painting conversion server 20 are displayed on the screen. Thereby, for example, the original image (1) shown in FIG. 12 or the original image (2) shown in FIG. 15 is displayed on the screen on the display means (not shown) of the user terminal 10. The default window image is a window image of a predetermined size displayed at a predetermined position in the picture conversion page.

  When any one of the plurality of original images (1) to (N) has been displayed on the screen, the presence / absence of a window movement instruction operation and the presence / absence of a window size change operation are determined in steps SA6 and SA9. The window movement instruction operation refers to an operation of placing a window image received from the picture conversion server 20 side in a displayed original image using an input device such as a mouse. The window size changing operation refers to an operation for setting the size (size) of the frame of the window image arranged in the original image by the window moving instruction operation using an input device such as a mouse.

  When the user performs a window movement instruction operation, the determination result in step SA6 is “YES”, the process proceeds to step SA7, the position data PD is updated according to the window movement instruction operation, and in the subsequent step SA8, After the updated position data PD is sent to the picture conversion server 20, the process returns to step SA4. The position data PD referred to here is, for example, the coordinate position of the upper left apex angle of the frame formed by the window image as described above.

  When the user performs a window size changing operation, the determination result in step SA9 is “YES”, the process proceeds to step SA10, the size data SD is updated in accordance with the window size changing operation, and in the subsequent step SA11, After sending the updated size data SD to the picture conversion server 20, the process returns to step SA4. Note that the size data SD referred to here is data including, for example, an aspect ratio (vertical / horizontal ratio) and a diagonal length of a frame formed by a window image as described above.

  When a window movement instruction operation or a window size changing operation is performed, the painting conversion server 20 performs painting-like conversion on the image area in the original image surrounded by the window image whose position or size has been updated, and painting-like conversion. The image in the image area is pasted on the image area in the original image surrounded by the window image and sent to the user terminal 10. Then, the determination result in step SA4 described above becomes “YES”, and the process proceeds to step SA5, where the image area surrounded by the window image is an original image obtained by painting-like conversion, that is, the example shown in FIGS. The original image is displayed on a screen on display means (not shown) of the user terminal 10.

  Thus, in the terminal processing executed by the user terminal 10, when the picture conversion server 20 is accessed and moved from the top page to the picture conversion page, a plurality of original images (1) to (1) to (s) sent from the picture conversion server 20 side. N) receives an original image selected from any of the above and a window image, displays it on the screen, and displays a desired frame in the original image displayed on the screen in response to a window move instruction operation and a window size change operation. When the window image is arranged at the size (size) and position, position data PD representing the position of the window image and size data SD representing the size are generated and sent to the picture conversion server 20 side.

  Then, based on the window image whose position or size has been updated according to the window movement instruction operation or the window size changing operation, the painting conversion server 20 performs painting-like conversion on the image area in the original image surrounded by the window image, When the image of the image area subjected to the tone conversion is pasted to the image area in the original image surrounded by the window image and sent to the user terminal 10, the user terminal 10 receives it and displays it on the screen.

(2) Operation of Server Process Next, the operation of the server process executed by the painting conversion server 20 will be described with reference to FIGS. The picture conversion server 20 first establishes a connection with the user terminal 10 that has accessed via the Internet in step SB1 shown in FIG. If there is a request for movement from the established user terminal 10 side to the painting conversion page, the process proceeds to step SB2, and the plurality of original images (1) to (N) and window images copied to the display area DE are displayed on the user terminal. Forward to 10. As a result, the user terminal 10 displays a picture conversion page composed of the original image and the window image selected from any of the plurality of original images (1) to (N) on the screen.

  Next, in step SB3, it is determined whether or not position data PD or size data SD has been received from the user terminal 10 side. When the position data PD or the size data SD updated in response to the window movement instruction operation or the window size changing operation performed on the user terminal 10 side is received, the determination result is “YES”, and the process proceeds to Step SB4. In steps SB4 to SB5, a window image corresponding to the size data SD is created, and an image in which the created window image is superimposed on the original image at a position specified by the position data PD is created.

  Subsequently, in step SB6, an image created by superimposing a window image updated according to the position data PD or the size data SD on the original image is sent to the user terminal 10. Next, in step SB7, the timer T is cleared to zero and the timer T starts to be timed. Thereafter, the process returns to the above-described step SB3, and if either the position data PD or the size data SD is not received from the user terminal 10, the determination result is “NO”, and the process returns to step SB8 illustrated in FIG. move on.

  In steps SB8 to SB13, painting-style conversion is performed in accordance with the elapsed time measured by the timer T from the time when the window image is arranged in the desired frame size (size) and position in the original image displayed on the screen. Different conversion algorithms and parameters are used. That is, when the time t0 has elapsed from the start of timer timing, the determination result in step SB8 becomes “YES”, the process proceeds to step SB9, the oil painting conversion algorithm / parameter group is designated, and then the process proceeds to step SB14.

  When the time t1 has elapsed from the start of the timer timing, the determination result in step SB10 is “YES”, the process proceeds to step SB11, the watercolor conversion algorithm / parameter group is designated, and then the process proceeds to step SB14. When the time t2 has elapsed from the start of timer timing, the determination result in step SB12 is “YES”, the process proceeds to step SB13, the pastel image conversion algorithm / parameter group is designated, and then the process proceeds to step SB14.

  In step SB14, an image of an area in the original image surrounded by the window image is extracted. Next, in step SB15, an image conversion process is executed to transform the image of the area extracted in step SB14 according to the currently selected conversion algorithm / parameter group. The image conversion process will be described in detail later.

  Subsequently, in Steps SB16 to SB17, the converted image obtained by the image conversion process in Step SB15 is pasted on an area in the original image surrounded by the window image and sent to the user terminal 10. Thereafter, the process is returned to the above-described step SB3 (see FIG. 7), and when the position data PD or the size data SD is updated in response to the window movement instruction operation or the window size change operation on the user terminal 10 side, again. Steps SB3 to SB17 are repeated.

(3) Operation of Image Conversion Process Next, the operation of the image conversion process will be described with reference to FIGS. When this process is executed via step SB15 (see FIG. 8) of the server process described above, the painting conversion server 20 proceeds to step SC1 shown in FIG. 9, and is stored in the touch pattern area HE (see FIG. 3). A brush pattern designated by the currently selected conversion algorithm / parameter group is set from the various brush patterns HP (1) to (N). Here, in order to simplify the description, it is assumed that, for example, a brush pattern HP (1) to be converted into an oil painting is set. Subsequently, the conversion process is executed via step SC2.

  When the conversion process is executed, the picture conversion server 20 proceeds to step SD1 illustrated in FIG. In step SD1, the image extracted in step SB14 (see FIG. 8) of the server process described above, that is, the image data of the area in the original image surrounded by the window image is copied to the conversion source image area THE. Subsequently, in step SD2, a start pixel P for starting conversion is set. As the start pixel P, any one of the bitmap format pixels P (1) to P (n × m) is selected. Specifically, for example, the pixel P (1) of the converted image area TME illustrated in FIG.

  Next, in step SD3, the separation value N is set based on the currently selected conversion algorithm / parameter group. As shown in FIG. 11A, the separation value N represents the separation distance between the pixel P (1) set as the start pixel P and the pixel P (2) where conversion is started next by the number of pixels. It represents the degree of overlap of the brush pattern HP. Subsequently, in step SD4, the color Cp of the start pixel P (pixel P (1)) for starting the conversion is acquired in the image copied to the conversion source image area THE.

  In step SD5, an initial value “1” is set to a pointer n that designates the number of the pixel constituting the brush pattern HP (1) set in step SC1 (see FIG. 9). Next, in step SD6, the first pixel of the writing pattern HP (1) is aligned with the pixel at the same position as the start pixel P of the conversion source image area THE. The brush pattern HP (1) is composed of ten pixels forming the brush graphic 1 as in the example illustrated in FIG.

  Subsequently, in step SD7, a pixel corresponding to the nth pixel designated by the pointer n is searched for in the writing pattern HP (1) in which the first pixel is aligned with the start pixel P. In step SD8, it is determined whether or not the retrieved pixel is within the target image. If it is outside the target image, the determination result is “NO”, and the process proceeds to Step SD10 described later.

  On the other hand, if the retrieved pixel is within the target image, the determination result is “YES”, the process proceeds to step SD9, and the color of the retrieved pixel is set to the color Cp acquired in step SD4. Thereafter, the process proceeds to step SD10, where the pointer n is incremented and stepped.

  Next, in step SD11, whether or not the value of the advanced point n is equal to or greater than the number of the last pixel of the brush pattern HP (1), that is, the colors are set for all the pixels constituting the brush pattern HP (1). Determine if finished. If the color setting has not been completed for all the pixels, the determination result is “NO”, and the process returns to step SD7. Thereafter, the above steps SD7 to SD11 are repeated until the color setting is completed for all the pixels constituting the writing pattern HP (1). Thereby, in the case of the above example, as shown in FIG. 11B, the writing pattern HP (1) with the start pixel P at the position corresponding to the pixel P (1) as the first pixel is obtained in step SD4. The acquired color Cp is filled.

  Thus, when the first start pixel P (pixel P (1)) is completely filled with the brush pattern HP (1), the determination result in step SD11 is “YES”, and the process proceeds to step SD12 to start pixel P (pixel). The separation value N is added to P (1)) and updated to the next start pixel P (pixel P (2)). In step SD13, it is determined whether or not the updated next start pixel P (pixel P (2)) has reached the final pixel.

  If the updated next start pixel P (pixel P (2)) has not reached the final pixel, the determination result is “NO”, and the processing from step SD4 described above is repeated. Thus, for example, as illustrated in FIG. 11A, when the pixels P (1), P (2), and P (3) arranged with the separation value N are set as the start pixels P, respectively, As shown in FIG. 5B, the writing pattern HP (1) in which the start pixel P is arranged as the first pixel is filled with the respective acquired colors Cp and overlapped as shown in FIG. As described above, the image is converted as an oil painting drawn by touching the brush pattern 1. When the updated next start pixel P reaches the final pixel, the determination result in step SD13 described above is “YES”, and the process ends.

  As described above, in the image conversion process, the number of pixels (separation value) starts from the start pixel P arbitrarily selected from the conversion target image (image area in the original image surrounded by the window image) copied to the conversion source image area THE. N) The degree of overlap of each brush pattern HP is determined so that every other pixel becomes the pattern start point, the color Cp corresponding to the pixel of each pattern start point is acquired from the conversion target image, and the corresponding touch pattern according to the acquired color Cp It is converted into oil painting by painting.

  Therefore, for example, as shown in FIG. 13, when a window image having a position and size surrounding a desired region in the original image (1) is arranged, the region surrounded by the window image is oil-painted as shown in FIG. When a window image having a position and size surrounding a desired area in the original image (2) is arranged as shown in FIG. 16, for example, as shown in FIG. 16, the window image is displayed as shown in FIG. The area surrounded by is displayed as an image converted to oil painting.

  As described above, in this embodiment, when an image area to be converted in the original image is designated by the window image, the image area surrounded by the window image is converted in the original image, and the converted image is converted. The image in the image area is pasted and displayed in the image area surrounded by the window image. Depending on the elapsed time from the point in time when the window image to be placed in the original image is specified, the type of conversion algorithm / parameter group used for image tone conversion, for example, “oil painting”, “watercolor painting”, “pastel painting” Different in order.

  As a result, the image area to be converted in the original image is simply specified in the window image, and the area surrounded by the window image is changed from “oil painting” to “watercolor” every time a predetermined time elapses. As a result of the conversion to different image tones and the order of “image”, the desired area of the original image can be easily converted into various image tones without trimming.

  In the above-described embodiment, the picture conversion system including the user terminal 10 and the picture conversion server 20 has been described. However, the gist of the present invention is not limited to this, and the image processing capability equivalent to the picture conversion server 20 is provided. If the user terminal 10 is provided with the above, it is possible to easily convert the desired area of the original image into various image styles without trimming in the stand-alone execution environment without connecting to the picture conversion server 20. .

  Further, in this embodiment, in order to simplify the explanation, the bitmap format image is handled. However, the gist of the present invention is not applied only to the bitmap format image, and jpeg (registered trademark) is used. Needless to say, the present invention can also be applied to images expressed in other data formats.

  Furthermore, in the present embodiment, every time the area in the original image surrounded by the window image elapses, it is converted from “oil painting” to “watercolor painting”, and further to “pastel painting” in order of different types of painting. However, the present invention is not limited to this, and the type of image tone conversion may be cyclic, that is, an “oil painting” → “watercolor painting” → “pastel painting” → “oil painting” →... Absent.

  In addition, in the above-described embodiment, tone conversion is performed on the area in the original image surrounded by one window image. Instead, a plurality of window images are provided, and a plurality of tone images to be converted in the original image are to be converted. It is also possible to enclose these areas with the plurality of window images, and simultaneously convert the plurality of areas surrounded by the window images into different image tones. In this way, the type of tone conversion matching the original image can be made clear at a glance.

10 User terminal 20 Painting conversion server 20a CPU
20b ROM
20c RAM
20d operation unit 20e communication unit 100 painting conversion system

Claims (5)

Area designating means for designating an area of a desired size at a desired position in the original image;
According to the elapsed time since the area is specified by the area specifying means, the tone specifying means for sequentially specifying different types of image tone;
Image conversion means for converting the image of the designated area into the image tone designated by the image tone designation means,
An image tone conversion apparatus for converting only an image in a designated area in the original image into different types of image tone sequentially according to the elapsed time.   2. The image conversion unit according to claim 1, wherein the image conversion unit does not convert an image area in the original image surrounded by the frame image while changing the size or position of the frame image. Image tone conversion device. The area specifying means includes a plurality of area specifying means for specifying a plurality of areas in the original image,
3. The image tone conversion apparatus according to claim 1, wherein the image tone designating unit includes a plurality of image tone designating units for designating different image tones for the plurality of areas designated by the plurality of area designating units. . On the computer,
An area designating step for designating an area of a desired size at a desired position in the original image;
An image tone designating step for sequentially designating different types of image tones according to the elapsed time since the area was designated by the area designating unit;
An image conversion step of converting the image of the designated area into the image tone designated by the image tone designating means,
A program characterized in that only an image in a specified area in the original image is sequentially converted into different types of image tone according to the elapsed time. A system comprising a terminal device and a server connected to the terminal device via a network,
The terminal device
Area designating means for designating an area of a desired size at a desired position in the original image;
According to the elapsed time since the area is specified by the area specifying means, the tone specifying means for sequentially specifying different types of image tone;
With
The server
Image converting means for converting the image of the designated area into the image tone designated by the image tone designating means;
With
Only the image in the designated area in the original image is converted into different types of image tone sequentially according to the elapsed time.

Images