JP2020046994A - Information processing apparatus and program - Google Patents

Abstract

To output, upon outputting background image data and character image data having character data superimposed on the background image data, character image data having less influence of the superimposition relative to color relation between the background image data and the character data, as compared with that obtained when the character image data is output on an as-is basis.SOLUTION: Character image data including background image data and character data superimposed on the background image data is received. Representative color information of the background image data in a region where the character data is superimposed, is extracted. If a color relationship between color information of the character data and the representative color information has a specific color relationship, then the character data is changed so that the color relationship should not be matched with the specific color relationship.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an information processing device and a program.

  Character data may be superimposed on background image data.

  Japanese Patent Application Laid-Open No. H11-163873 specifies a character portion in an image, determines a character outline color based on a comparison between the character color and the background color, and changes the color around the character from the outline color to the background color. A method is described in which an image is windy so as to change stepwise.

  Patent Literature 2 discloses an apparatus that generates another promotional item from a previously created promotional item.

  Patent Document 3 discloses that the brightness, saturation, and hue angle of a background color are obtained, a combination of color schemes in which the hue angle of the background color is changed is calculated, and the readability of the character is determined based on the combination of the color scheme and information on the character color. And a device for adjusting the brightness of the background color.

JP 2018-19167 A JP-A-2006-21108 JP 2018-22347 A

  By the way, when character data is superimposed on the background image data, the superimposition may affect the color relationship between the background image data and the character data.

  An object of the present invention is to compare background image data and character data with character image data including background image data and character data superimposed on the background image data, as compared with a case where the character image data is directly output. It is possible to output character image data in which the influence of the superimposition on the color relationship between is reduced.

  The invention according to claim 1 receives character image data including background image data and character data superimposed on the background image data, and displays representative color information of the background image data in an area where the character data is superimposed. Extracting means for extracting, when the color relationship between the color information of the character data and the representative color information corresponds to a specific color relationship, the character data is extracted such that the color relationship does not correspond to the specific color relationship. An information processing apparatus comprising: a changing unit for changing; and an output unit for outputting document image data including the changed character data and the background image data.

  The invention according to claim 2 is the information processing apparatus according to claim 1, wherein the color relationship is a relationship relating to the visibility of the character data with respect to the background image data.

  The visibility of the character data with respect to the background image data is determined by a numerical value using a plurality of types of color parameters included in each of the color information and the representative color information. 3. The information processing apparatus according to claim 2, wherein when the numerical value is less than a threshold value, the character data is changed assuming that the color relationship corresponds to the specific color relationship.

  The invention according to claim 4 is the information processing apparatus according to claim 1, wherein the change unit changes the color information as a change in the character data.

  The invention according to claim 5, wherein the color relationship is a relationship related to the visibility of the character data with respect to the background image data, and the changing unit improves the visibility as a change of the character data. The information processing apparatus according to claim 4, wherein the color information is changed.

  In the invention according to claim 6, the color information includes brightness information indicating the brightness of the character data, the representative color information includes brightness information indicating the brightness of the background image data, and the changing unit includes: 6. The information processing apparatus according to claim 5, wherein the brightness of the character data is changed as the change of the character data.

  The invention according to claim 7, wherein the changing means changes the brightness of the character data so that a difference between the brightness of the character data and the brightness of the background image data is equal to or greater than a brightness difference threshold. An information processing apparatus according to claim 6, wherein

  In the invention according to claim 8, the change unit changes the display mode of the character data as the change of the character data when there is no color information of the character data in which the difference is equal to or greater than the lightness difference threshold value. An information processing apparatus according to claim 7, characterized in that:

  The invention according to claim 9, wherein the color information includes saturation information indicating a saturation of the character data and hue information indicating a hue of the character data, and the representative color information includes a color of the background image data. The image processing apparatus further includes: saturation information indicating saturation and hue information indicating a hue of the background image data, wherein the change unit changes at least one of the saturation and the hue of the character data as the change of the character data. The information processing apparatus according to claim 5, wherein

  According to a tenth aspect of the present invention, the change unit is configured such that, when the impression of the character image data including the character data after the change is different from the impression of the character image data including the character data before the change, The information processing apparatus according to any one of claims 1 to 9, wherein, as the change of the character data, a display mode of the character data is changed without changing the color information. .

  The invention according to claim 11, wherein the color relationship is a relationship relating to the visibility of the character data with respect to the background image data, and the visibility of the character data with respect to the background image data is determined by the color information and the representative color. Each of the information is defined by a color parameter relating to each of lightness, saturation, and hue, and the changing unit further includes a lightness, a saturation, and a hue between the character data and the background image data. The information processing apparatus according to claim 1, wherein it is determined whether or not the color relationship corresponds to the specific color relationship using an evaluation model defined by a difference.

  According to a twelfth aspect of the present invention, a computer receives character image data including background image data and character data superimposed on the background image data, and represents the background image data in an area where the character data is superimposed. Extracting means for extracting color information, when the color relation between the color information of the character data and the representative color information corresponds to a specific color relation, the character so that the color relation does not correspond to the specific color relation; A program that functions as a change unit that changes data, and an output unit that outputs document image data including the character data after the change and the background image data.

  According to the first, fourth, eleventh, and twelfth aspects of the present invention, in a case where character image data including background image data and character data superimposed on the background image data, the character image data is directly output. In comparison, it is possible to output character image data in which the influence of superposition on the color relationship between the background image data and the character data is reduced.

  According to the second and third aspects, it is possible to output character image data in which the influence of the visibility of character data is reduced.

  According to the fifth, sixth, seventh and ninth aspects of the invention, it is possible to output character image data with improved visibility of character data.

  According to the invention described in claim 8, the visibility of the character data can be changed regardless of the brightness of the character data.

  According to the tenth aspect, it is possible to output character image data in which the influence of superimposition on the color relationship is reduced while maintaining the impression of the character image data.

FIG. 2 is a block diagram illustrating a hardware configuration of the information processing apparatus according to the embodiment. FIG. 2 is a block diagram illustrating functions of the information processing apparatus according to the embodiment. It is a figure showing visibility DB. It is a figure showing a feeling DB. It is a figure showing a character image. It is a figure showing a flow chart about visibility evaluation processing. It is a figure showing a flow chart about character change processing. It is a figure which shows the character image in which the decoration was given. FIG. 3 is a diagram illustrating a character image according to the first embodiment. FIG. 4 is a diagram illustrating information of each color according to the first embodiment. FIG. 3 is a diagram illustrating lightness, saturation, and hue angle of each color according to the first embodiment. It is a figure which shows the color information of the character whose brightness was changed. FIG. 4 is a diagram illustrating a character image in which the brightness of a character has been changed. FIG. 9 is a diagram illustrating a character image according to the second embodiment. FIG. 14 is a diagram illustrating information of each color according to the second embodiment. FIG. 14 is a diagram illustrating lightness, saturation, and hue angle of each color according to the second embodiment. It is a figure which shows the color information of the character whose brightness was changed. FIG. 4 is a diagram illustrating a character image in which the brightness of a character has been changed. FIG. 14 is a diagram illustrating a character image according to a third embodiment. FIG. 14 is a diagram illustrating information of each color according to the third embodiment. FIG. 14 is a diagram illustrating lightness, saturation, and hue angle of each color according to the third embodiment. It is a figure which shows the color information of the character whose brightness was changed. FIG. 4 is a diagram illustrating a character image in which the brightness of a character has been changed. It is a figure showing the taste which the character image after change has. It is a figure which shows the character image in which the decoration was given to the character. FIG. 14 is a diagram illustrating an original character image according to a fourth embodiment. FIG. 14 is a diagram illustrating a generated character image according to a fourth embodiment. FIG. 14 is a diagram illustrating information of each color according to the fourth embodiment. FIG. 14 is a diagram illustrating lightness, saturation, and hue angle of each color according to the fourth embodiment. It is a figure which shows the color information of the character whose brightness was changed. FIG. 4 is a diagram illustrating a character image in which the brightness of a character has been changed. FIG. 14 is a diagram illustrating an original character image according to a fifth embodiment. FIG. 14 is a diagram illustrating a generated character image according to a fifth embodiment. FIG. 14 is a diagram illustrating information of each color according to the fifth embodiment. FIG. 14 is a diagram illustrating lightness, saturation, and hue angle of each color according to Example 5. It is a figure which shows the character image in which the decoration was given to the character. FIG. 14 is a diagram illustrating an original character image according to a sixth embodiment. FIG. 14 is a diagram illustrating a generated character image according to a sixth embodiment. FIG. 18 is a diagram illustrating information of each color according to the sixth embodiment. FIG. 14 is a diagram illustrating lightness, saturation, and hue angle of each color according to Example 6. It is a figure which shows the color information of the character whose brightness was changed. FIG. 4 is a diagram illustrating a character image in which the brightness of a character has been changed. It is a figure showing the taste which the character image after change has. This is information indicating the color information associated with the designated taste. FIG. 4 is a diagram illustrating a character image in which the color of a character has been changed.

  The hardware configuration of the information processing apparatus according to the embodiment of the present invention will be described with reference to FIG. FIG. 1 illustrates an example of a hardware configuration of an information processing apparatus according to the present embodiment.

  The information processing apparatus 10 is, for example, a PC (personal computer), a tablet PC, a smartphone, a mobile phone, or the like. Of course, other devices may be used.

  The communication unit 12 is a communication interface, and has a function of transmitting information to another device and a function of receiving information transmitted from another device. The communication unit 12 may have a wireless communication function or a wired communication function.

  The UI unit 14 is a user interface, and includes a display unit and an operation unit. The display unit is a display device such as a liquid crystal display or an EL display. The operation unit is an input device such as a keyboard. Further, a user interface (for example, a touch panel or the like) having both a display unit and an operation unit may be used as the UI unit 14. Further, the UI unit 14 may include a sound generating unit such as a speaker that generates sound, a sound input unit such as a microphone that receives a sound input, and the like.

  The storage unit 16 is one or a plurality of storage areas for storing various information (data, programs, and the like). Each storage area may be defined as one or a plurality of storage devices (for example, a physical drive such as a hard disk drive or a memory) provided in the information processing device 10 or a logical device set in one or a plurality of storage devices. It may be defined as a partition or a logical drive.

  The processor 18 is configured by one or a plurality of processors such as CPUs, and is configured to control the operation of each unit of the information processing device 10.

  Hereinafter, the functions of the information processing apparatus 10 will be described in detail with reference to FIG. FIG. 2 illustrates an example of a function of the information processing apparatus 10.

  The receiving unit 20 is configured to receive various information. For example, the receiving unit 20 receives image data, character data (data having a text format), character image data, color setting information, font setting information, and the like. The character image data is data including background image data (data having an image format) and character data (data having a text format) superimposed on the background image data. The receiving unit 20 may be realized by the communication unit 12 and receive information transmitted from an external device, or may be realized by the UI unit 14 and receive information input or specified by the user. For example, when the user operates the UI unit 14 to specify character image data as a processing target, the receiving unit 20 receives the character image data. When character image data is sent from the external device to the information processing device 10 and received by the communication unit 12, the receiving unit 20 receives the character image data.

  The image data, character data, and character image data may be data used for a specific application. In this case, the data may be processed in advance into data having a size, a shape, or the like according to the use. For example, the data may be used for a specific medium for a specific application. The media is, for example, a poster, a postcard, a flyer, a promotional material, and the like. In this case, the data may be processed into data having a size, a shape, or the like corresponding to a specific medium. Information indicating a specific application (for example, a specific medium) is linked to the data in advance. Of course, data that is not used for a specific purpose may be received by the receiving unit 20. Further, image data, character data, background image data, and the like may be stored in the storage unit 16 in advance.

  The media selection unit 22 is configured to select a new medium (application) for image data, character data, character image data, and the like. The selection is made by the user via the UI unit 14, for example. For example, “postcard” is selected as a new medium for character image data for a poster.

  The layout changing unit 24 is configured to change the layout of the data to be changed (for example, image data, character data, character image data, etc.) according to the new medium selected by the medium selecting unit 22. For example, the layout changing unit 24 changes the layout without changing the contents (images, characters, and the like), color arrangement settings, and font settings of the data to be changed. For example, the layout changing unit 24 changes the layout of the character image data from the layout for the poster to the layout for the postcard without changing the content, the color setting, and the font setting of the character image data for the poster. The layout changing unit 24 may perform processing such as trimming.

  The visibility evaluation unit 26 is configured to receive the character image data and evaluate the visibility of the characters included in the character image data. Specifically, the visibility evaluation unit 26 extracts the representative color information of the background image data in the area where the character data is superimposed, specifies the color relationship between the color information of the character data and the representative color information, It is determined whether the color relationship corresponds to a specific color relationship. Each of the color information and the representative color information includes a numerical value using a plurality of types of color parameters. The color parameters are, for example, lightness, saturation, hue, and the like. The color relationship is a relationship related to the visibility of the character data with respect to the background image data. The visibility is determined by numerical values using a plurality of types of color parameters included in each of the color information and the representative color information. The specific color relationship is, for example, a relationship that the visibility of the character data with respect to the background image data is poor. For example, when the evaluation value indicating the visibility is less than the threshold value, it is determined that the color relationship corresponds to a specific color relationship. That is, it is determined that the visibility of the character data with respect to the background image data is poor.

  In the present embodiment, the visibility evaluation unit 26 uses the evaluation model (visibility model) defined by the respective differences in lightness, saturation, and hue between the character data and the background image data to determine the color relationship. It is determined whether a specific color relationship is met. The evaluation model may be created by the visibility evaluation unit 26, or may be created by another device or the like.

  When the color relationship between the color information of the character data and the representative color information corresponds to a specific color relationship, the change unit changes the character data so that the color relationship does not correspond to the specific color relationship. It is configured as follows. For example, the changing unit 28 changes the color information of the character data so that the visibility of the character data with respect to the background image data is improved. Specifically, the changing unit 28 changes the brightness of the character data. By doing so, the brightness difference between the background image data and the character data is changed. For example, the changing unit 28 changes the brightness of the character data so that the difference between the brightness of the character data and the brightness of the background image data is equal to or greater than a brightness difference threshold. The brightness difference threshold value is determined so that the evaluation value representing the visibility is equal to or larger than the threshold value. The evaluation value of the visibility and the lightness difference threshold will be described later in detail. The changing unit 28 may change at least one of the saturation and the hue of the character data.

  The feeling maintaining judgment unit 30 determines that the taste (impression) of the character image data to which the change processing by the change unit 28 has been applied matches the taste (impression) of the character image data before the change processing is applied. It is configured to determine whether or not there is.

  Here, the taste will be described. The taste is a concept in which, for example, a color scheme of an object (for example, character image data) is defined by a term expressing an impression. For example, the taste is determined in advance based on a preference model that typifies an impression that a person has on an object. In the preference model, impressions are classified into a plurality of types based on hue, color tone, and the like, and the taste of the object is determined by the hue and color tone of the object. For example, a dominant hue or color tone is specified in the character image data, and the taste of the character image data is determined by the dominant hue or color tone. The taste of the character image data may be determined based on, for example, the layout and size of the background image data and the character data, the font size of the character data, the type of the font, and the like.

  The display mode changing unit 32 is configured to change the display mode of the character data as the change of the character data. For example, when the changing unit 28 cannot change the character data so that the color relationship between the color information of the character data and the representative color information does not correspond to the specific color relationship, the display mode changing unit 32 Then, the display mode of the character data is changed. As an example, when there is no color information of character data in which the difference between the brightness of the character data and the brightness of the background image data is equal to or greater than the brightness difference threshold, the display mode changing unit 32 changes the display mode of the character data. . For example, the display mode changing unit 32 changes the character decoration of the character data as a change of the display mode.

  If the taste of the character image data to which the change process by the change unit 28 is applied is different from the taste of the character image data before the change process is applied, the display mode change unit 32 determines the color of the character data. The display mode of the character data may be changed without changing the information.

  The output unit 33 is configured to output character image data. For example, the output unit 33 may output character image data to which the change processing by the change unit 28 has been applied, or may output character image data to which the change processing by the display mode change unit 32 has been applied. The output unit 33 is realized by, for example, a display unit of the UI unit 14 and causes the display unit to display character image data. The output unit 33 may transmit the character image data to another device or the like via the communication unit 12.

  The visibility DB (database) 34 is a database that stores information (visibility data) indicating an evaluation result regarding the visibility of the background image data and the character data. The visibility is evaluated in advance, and information indicating the evaluation result is stored in the visibility DB 34 in advance. The visibility DB 34 is realized by, for example, the storage unit 16.

  The sensitivity DB (database) 36 is a database that stores information indicating an analysis result obtained by a sensitivity evaluation experiment on the strength of the relationship between the taste and the color scheme. A sensitivity evaluation experiment is performed in advance, and information indicating the analysis result is stored in the sensitivity DB 36 in advance. The sensibility DB 36 is realized by, for example, the storage unit 16.

  Each function illustrated in FIG. 2 is realized by cooperation of hardware and software as an example. Specifically, the function of each unit of the information processing device 10 is realized by the processor 18 reading and executing a program stored in the storage unit 16. The program is stored in the storage unit 16 via a recording medium such as a CD or a DVD, or via a communication path such as a network. As another example, the function of each unit of the information processing device 10 may be realized by hardware resources such as a processor, an electronic circuit, or an ASIC (Application Specific Integrated Circuit). A device such as a memory may be used in the realization. As yet another example, the function of each unit of the information processing device 10 may be realized by a DSP (Digital Signal Processor) or an FPGA (Field Programmable Gate Array).

Hereinafter, the visibility DB 34 will be described in detail with reference to FIG. FIG. 3 shows the configuration of the visibility DB 34. In the visibility DB 34, for example, the hue ID, the information indicating the color of the character, the information indicating the color of the character, the information indicating the color of the background image, the information indicating the color of the background image, and the information indicating the hue of the background image. Information (information indicating visibility) is associated with each other. As an example, a color name (chromatic color and achromatic color) defined by a PCCS (Practical Color Co-ordinate System) is used as the color of the background image and the color of the character. The color of the PCCS is determined by referring to the RGB data from the color DB of the PCCS. Although the color names defined in the PCCS are used as the color names, this is merely an example, and another definition may be used. The visibility is the visibility of characters superimposed on the background image. The visibility is evaluated in advance according to a predetermined evaluation criterion, and is determined, for example, by six levels of evaluation values (1 to 6). The significance of each evaluation value is shown below.
1: very hard to read 2: fairly hard to read 3: somewhat hard to read 4: normal readable 5: easy to read 6: very easy to read

  Hereinafter, the sensitivity DB 36 will be described in detail with reference to FIG. FIG. 4 shows a configuration of the sensitivity DB 36. In the sensibility DB 36, as an example, the color arrangement ID, the information indicating the sensibility word, the information indicating the ranking (rank), the information indicating the base color, the information indicating the secondary color, and the information indicating the accent color are mutually different. Are associated. The kansei word is a term expressing a taste. The base color is the dominant color and can be said to be an example of the representative color. The secondary color is the dominant color after the base color. The accent color is an emphasis color (for example, a color having a role of giving a change to a color tone or enhancing another color).

  The taste associated with the combination is realized by the combination of the base color, the secondary color, and the accent color. The ranking is a ranking regarding the strength of the relationship between the color combination and the taste. The higher the combination of colors in the ranking, the stronger the relationship with the taste, that is, the more suitable the combination of colors expressing the taste. Taking the taste of pretty as an example, it can be said that the combination of colors ranked first is more suitable as a combination of colors expressing the taste of pretty than the combination of rank two.

Hereinafter, the evaluation model (visibility model) will be described. In the evaluation model, a lightness difference, a chroma difference, and a hue difference between the character data and the background image data are used. The lightness difference (Lightness _dif ) is defined by the following equation (1), the saturation difference (Saturation _dif ) is defined by the following equation (2), and the hue difference (Hue _dif ) Is defined by the following equation (3).

Lightness _text is the brightness of character data, and Lightness _background is the brightness of background image data. Saturation _text is the saturation of character data, and Saturation _background is the saturation of background image data. Hue _text is the hue of the character data, and Hue _background is the hue of the background image data. For example, a brightness difference, a saturation difference, and a hue difference are calculated from the RGB data.

  The evaluation model (visibility model) is defined by the following equation (4).

Legibility is an evaluation value of visibility. The coefficients β _l , β _s , β _h, and ε are calculated by, for example, learning using a linear regression model using data (visibility data) stored in the visibility DB 34. These coefficients are predetermined, for example.

  Hereinafter, the character image data will be described with reference to FIG. FIG. 5 shows an example of character image data. In the following description, character image data is abbreviated as “character image”, background image data is abbreviated as “background image”, and character data is abbreviated as “character”.

  The character image 38 includes a layer 42 including a background image 40 and a layer 46 including a character 44, and the layer 46 is superimposed on the layer 42. An image, a color box, and the like are formed in a background area 40 a where the character 44 is superimposed on the background image 40.

  Hereinafter, the visibility evaluation processing will be described with reference to FIG. FIG. 6 shows a flowchart relating to the visibility evaluation processing. Here, it is assumed that the visibility of the character image 38 shown in FIG. 5 is evaluated.

  The visibility evaluation unit 26 receives the character image 38 to be evaluated, and specifies the representative color (main color) of the background area 40a on which the character 44 is superimposed in the background image 40 (step S01). The visibility evaluation unit 26 determines, for example, a color having a specific ratio or more in the background region 40a as a representative color.

  Next, the visibility evaluation unit 26 calculates the brightness, saturation, and hue of the representative color (step S02).

  The visibility evaluation unit 26 specifies the color of the character 44 (Step S03). Note that a character to be evaluated for visibility may be specified by the user. In this case, the visibility evaluation unit 26 specifies the color of the specified character. Further, the visibility evaluation unit 26 specifies a representative color of the background area on which the designated character is superimposed (step S01), and calculates the brightness, saturation, and hue of the representative color (step S02).

  Next, the visibility evaluation unit 26 calculates the brightness, saturation, and hue of the character 44 (step S04).

  Note that the processes of steps S01 and S02 and the processes of steps S03 and S04 may be performed simultaneously, or one of the processes may be performed first and the other may be performed subsequently.

  Next, the visibility evaluation unit 26 calculates the visibility evaluation value using the evaluation model (visibility model) defined by the above equation (4) (step S05).

  When the visibility evaluation value is equal to or larger than the threshold value (step S06, Yes), the visibility evaluation unit 26 determines that the color information of the character 44 does not need to be changed (step S07). In this case, the change processing for the character 44 is not performed.

  When the evaluation value is less than the threshold value (step S06, No), the visibility evaluation unit 26 determines that the color information of the character 44 needs to be changed (step S08). In this case, a change process for the character 44 is performed.

  The threshold value is a value for evaluating the visibility of the character superimposed on the background image, and is, for example, a value for determining whether the character superimposed on the background image is easy to see. The threshold value is, for example, a predetermined value and may be changed by the user. For example, a value that is assumed to be determined to be easy to see the character superimposed on the background image is set as the threshold.

  Hereinafter, the character changing process will be described with reference to FIG. FIG. 7 shows a flowchart relating to the character change processing. When it is determined that the evaluation value of the visibility is less than the threshold value, a character changing process is performed.

  The changing unit 28 determines the lightness difference between the representative color of the background image 40 and the color of the character 44 based on the evaluation value of visibility, which is assumed to determine that the character 44 superimposed on the background image 40 is easy to see. , The saturation difference and the hue difference are calculated (step S10). That is, the changing unit 28 calculates the brightness difference, the saturation difference, and the hue difference from which the evaluation value of the visibility is obtained. The above threshold may be used as the evaluation value of the visibility.

  Next, the changing unit 28 calculates the color of the character 44 from which the brightness difference, the saturation difference, and the hue difference calculated in step S10 are obtained without changing the color of the background image 40 (step S11). The color is a color assumed that it is determined that the character 44 is easy to see without changing the color of the background image 40.

  Next, the changing unit 28 changes the color of the character 44 to the color calculated in step S11 (step S12).

  Next, the feeling maintaining determination unit 30 determines the taste of the character image 38 including the character 44 whose color has been changed (step S13).

  If the determined taste matches the taste specified by the user (step S14, Yes), the process ends. In this case, a character image in which the visibility of the character is improved by changing the color while having a taste designated by the user is generated. For example, the output unit 33 causes the display unit of the UI unit 14 to display a character image 38 including the character 44 whose color has been changed.

  When the determined taste does not match the taste specified by the user (step S14, No), the display mode changing unit 32 changes the decoration of the character 44 before the color is changed (step S15). That is, the decoration is changed without changing the color of the character 44. In this case, a character image that has a taste specified by the user and has improved character visibility due to decoration is generated. For example, the output unit 33 causes the display unit of the UI unit 14 to display the character image 38 including the character 44 whose decoration has been changed without changing the color.

  FIG. 8 shows an example of a decorated character image. The character image 48 includes characters with shadows (characters to which shadow processing has been applied). The character image 50 includes glowing characters (characters to which glow processing has been applied). The character image 52 includes a character with a peripheral outline (a character to which outline processing has been applied). By applying such a decoration to a character, the visibility of the character can be improved even when the color of the character is not changed.

  Hereinafter, examples of the present embodiment will be described.

(Example 1)
Hereinafter, Example 1 will be described. In the first embodiment, a color box is used as a background image. FIG. 9 illustrates a character image 54 according to the first embodiment. The character image 54 includes a background image 56 as a color box and a character 58 (character string “natural history”) superimposed on the background image 56. The character image 54 is an image used for a poster, for example. For example, when the user operates the UI unit 14 to specify a taste, the color of the color box and the character are set so that the character image 54 having the specified taste is generated. Here, the user has designated the taste “natural” using the sensitivity word “natural”, and the character image 54 having the taste “natural” has been generated. The character image 54 having the taste “natural” may be generated by the information processing device 10 or may be generated by another device. Here, each color of the background image 56 and the character 58 is one color.

  The evaluation model (visibility model) used in the first embodiment is defined by the following equation (5). In Examples 2 to 5 described later, the evaluation model defined by Expression (5) is used.

As described above, the coefficients β _l , β _s , β _h, and ε are calculated by learning using a linear regression model using data (visibility data) stored in the visibility DB 34. If the evaluation value (threshold) of visibility is “3” or more, it is determined that the characters on the background image correspond to easy-to-view characters. Note that each coefficient in the equation (5) is merely an example, and can be changed by data stored in the visibility DB 34.

  Hereinafter, the processing in the first embodiment will be described in detail.

  First, the visibility evaluation unit 26 specifies the color of the character 58 and the representative color (main color) of the background image 56, and specifies the RGB data of each color. FIG. 10 shows information of each color. For example, the visibility evaluation unit 26 specifies the PCCS_ID, the hue, the color tone, and the RGB for each of the color of the character 58 and the representative color of the background image 56.

  Next, the visibility evaluation unit 26 calculates lightness, saturation, and hue angle for each of the color of the character 58 and the representative color of the background image 56. FIG. 11 shows lightness, saturation, and hue angle of each color.

Next, the visibility evaluation unit 26 calculates a brightness difference, a saturation difference, and a hue difference between the color of the character 58 and the representative color of the background image 56. The following shows these values.
Brightness difference = 5.73545
Saturation difference = 8.58435
Hue difference = 10.3245

Next, the visibility evaluation unit 26 substitutes the lightness difference, the saturation difference, and the hue difference into the evaluation model (visibility model) defined by the above equation (5), thereby obtaining the background image 56. The evaluation value of the visibility of the character 58 with respect to is calculated. The evaluation values of visibility calculated in this manner are shown below.
Evaluation value of visibility = 1.3139

  The evaluation value (threshold) at which the character superimposed on the background image is assumed to be easy to see is set to “3”. Since the visibility evaluation value calculated as described above is less than the threshold, the visibility evaluation unit 26 determines that the color information of the character 58 needs to be changed.

  In this case, the changing unit 28 does not change the color of the background image 56 and calculates the RGB data of the character 58 for the evaluation value of the visibility to be “3”. Therefore, as an example, the changing unit 28 changes the brightness of the character 58. That is, the changing unit 28 calculates the brightness difference (the brightness difference between the character 58 and the background image 56) for the evaluation value of the visibility to be “3”, and calculates the brightness of the character 58 from which the brightness difference is obtained. Is calculated.

For example, in order to obtain “3” as the evaluation value of visibility, the lightness difference needs to be 29.6939. The brightness of the character 58 from which the brightness difference is obtained, that is, the brightness at which the character 58 is assumed to be easy to see, is calculated by the following equation.
Easy-to-see brightness = (brightness of representative color of background image 56)-(brightness difference) = 55.9409
That is, in order for the evaluation value of visibility to be “3”, 29.6939 is required as the brightness difference, and 55.9409 is required as the brightness of the character 58 for that. The brightness difference ("29.6939") for obtaining the threshold ("3") as the evaluation value of visibility corresponds to an example of the brightness difference threshold.

  In the above example, the changing unit 28 calculates the brightness difference (brightness difference threshold) for the evaluation value of the visibility to become the threshold value ("3"), and calculates the brightness of the character 58 from which the brightness difference threshold value is obtained. However, the brightness of the character 58 that provides a brightness difference equal to or greater than the brightness difference threshold may be calculated. Further, the changing unit 28 calculates a brightness difference (brightness difference threshold) for the evaluation value of the visibility to be equal to or more than the threshold ("3"), and calculates the brightness of the character 58 from which the brightness difference threshold is obtained. Is also good. The same applies to the following Examples 2 to 6.

  In the first embodiment, the brightness obtained by subtracting the brightness difference from the brightness of the representative color is used as the brightness of the character 58. However, the brightness obtained by adding the brightness difference to the brightness of the representative color is , Character 58. Either method may be adopted as long as the amount of change in brightness does not reach the upper limit, but when the amount of change in brightness reaches the upper limit by one method and the amount of change in brightness does not reach the upper limit by the other method Employs the other method.

  FIG. 12 shows the color information of the character 58 whose brightness has been changed. The brightness has been changed to 55.9409. The saturation and hue angle of the character 58 are not changed. Further, the changing unit 28 calculates RGB data for expressing these lightness, saturation, and hue angle. FIG. 12 also shows the RGB data. This RGB data is RGB data in which a change in brightness is reflected.

  Next, the changing unit 28 changes the RGB data of the character 58 to the RGB data in which the change in the brightness is reflected, thereby generating a character image in which the brightness of the character 58 is changed. FIG. 13 shows the character image 60. In the character image 60, the brightness of the character 58 is changed from the character image 54. The color of the background image 56 has not been changed. The brightness of the character 58 is changed so that the evaluation value of the visibility becomes “3”. Therefore, the character 58 is easier to see in the character image 60 than in the character image 54 before the change.

  In addition, the feeling maintaining determination unit 30 compares the taste of the character image 54 before the change with the taste of the character image 60 after the change. In the first embodiment, both tastes match. Therefore, the character 58 is not decorated.

  For example, the output unit 33 displays the changed character image 60 on the display unit of the UI unit 14.

  By changing the brightness of the character 58, a character image 60 is output in which the influence of the superposition on the color relationship between the background image 56 and the character 58 is reduced as compared with the case where the character image 54 is output as it is. . For example, a character image 60 in which the character 58 is easier to see than the character image 54 is output.

  In the first embodiment, the brightness of the character 58 is changed, and the saturation and the hue are not changed. This is only an example, and the saturation and hue may be changed. That is, the changing unit 28 may change at least one of the color parameters of the lightness, the saturation, and the hue of the character 58 so that the evaluation value of the visibility becomes “3”.

  Generally, among the brightness difference, the saturation difference, and the hue difference, the brightness difference is considered to have the greatest effect on the visibility of the character, and the change in the brightness difference is considered to most contribute to the change in the visibility of the character. . Therefore, in the first embodiment, the brightness of the character is changed so that the visibility of the character is improved. Of course, if the target visibility can be obtained, the saturation or hue of the character may be changed without changing the brightness of the character. If the target visibility cannot be obtained due to the change in the brightness, the saturation or hue of the character may be changed. In general, each color parameter is related to each other. For example, the smaller the saturation difference, the smaller the hue difference. When the saturation difference between the character and the background image is large, it is considered that the degree to which the change in the hue difference contributes to the change in visibility is greater than when the saturation difference is small. Therefore, when the saturation difference is equal to or greater than a predetermined value (for example, a value assumed to contribute to a change in visibility), the hue of the character may be changed. Of course, such processing is only an example, and the color parameter of the character to be changed may be changed according to the character image to be processed.

(Example 2)
Hereinafter, a second embodiment will be described. In the second embodiment, an image expressing a specific pattern or the like is used as a background image. FIG. 14 illustrates a character image 62 according to the second embodiment. The character image 62 includes a background image 64 expressing a specific pattern or the like, and a character 66 (character string “natural history”) superimposed on the background image 64. The character image 62 is an image used for a poster, for example. Here, the user has designated taste "natural", and a character image 62 having the taste "natural" has been generated.

  Hereinafter, the processing in the second embodiment will be described in detail.

  First, the visibility evaluation unit 26 specifies the color of the character 66 and the representative color (main color) of the background image 64, and specifies the RGB data of each color. The visibility evaluation unit 26 specifies the representative color of the area where the character 66 is superimposed on the background image 64, and specifies the RGB data of the color. In the second embodiment, two colors (representative colors 1 and 2) are specified as representative colors of the background image 64. FIG. 15 shows information of each color. For each of the color of the character 66 and the representative colors 1 and 2 of the background image 64, the PCCS_ID, the hue, the color tone, and the RGB are specified by the visibility evaluation unit 26.

  Next, the visibility evaluation unit 26 calculates lightness, saturation, and hue angle for each of the color of the character 66 and the representative colors 1 and 2 of the background image 64. FIG. 16 shows lightness, saturation, and hue angle of each color.

  Next, the visibility evaluation unit 26 calculates a lightness difference, a saturation difference, and a hue difference between the color of the character 66 and the representative color 1 of the background image 64, and calculates the color of the character 66 and the representative color of the background image 64. The lightness difference, the saturation difference, and the hue difference between the two are calculated.

The difference between the color of the character 66 and the representative color 1 is as follows.
Lightness difference = 10.7193
Saturation difference = 8.24962
Hue difference = 40.9436

The difference between the color of the character 66 and the representative color 2 is as follows.
Lightness difference = 28.8358
Saturation difference = 10.5515
Hue difference = 24.6965

  Next, the visibility evaluation unit 26 substitutes the lightness difference, the saturation difference, and the hue difference into the evaluation model (visibility model) defined by the above equation (5), thereby obtaining the background image 64. The evaluation value of the visibility of the character 66 with respect to is calculated. Since two colors are specified as the representative colors of the background image 64, the visibility evaluation unit 26 calculates an evaluation value for each representative color.

The evaluation value of the visibility of the character 66 for the representative color 1 is as follows.
Evaluation value of visibility = 1.73756

The evaluation value of the visibility of the character 66 for the representative color 2 is as follows.
Evaluation value of visibility = 2.70065

  The evaluation value (threshold) at which the character superimposed on the background image is assumed to be easy to see is set to “3”. Since the visibility evaluation value calculated as described above is less than the threshold, the visibility evaluation unit 26 determines that the color information of the character 66 needs to be changed.

  In this case, the changing unit 28 does not change the color of the background image 64 and calculates the RGB data of the character 66 for the evaluation value of the visibility to be “3”. Therefore, as an example, the changing unit 28 changes the brightness of the character 66. That is, the changing unit 28 calculates the brightness difference (the brightness difference between the character 66 and the background image 64) for the evaluation value of the visibility to be “3”, and calculates the brightness of the character 66 from which the brightness difference is obtained. Is calculated. In the second embodiment, since two colors are specified as the representative colors, the changing unit 28 calculates the lightness difference for each representative color.

For example, in order to obtain “3” as the visibility evaluation value, the lightness difference 1 between the representative color 1 and the representative color 1 needs to be 32.9521. The lightness difference 2 between the representative color 2 and the representative color 2 needs to be 34.0046. The brightness at which the character 66 is assumed to be easy to see is calculated by the following equation.
Easy-to-see brightness = (brightness of representative color 2 of background image 64)-(brightness difference 2) = 28.5298
That is, in order for the visibility evaluation value to be “3”, 28.5298 is required as the brightness of the character 66. If the brightness of the character 66 is 28.5298, the evaluation value of the visibility becomes “3” or more in relation to both the representative colors 1 and 2.

  As in the first embodiment, the brightness obtained by adding the brightness difference to the brightness of the representative color may be used as the brightness of the character 58.

  FIG. 17 shows the color information of the character 66 whose brightness has been changed. The brightness has been changed to 28.5298. The saturation and hue angle of the character 66 are not changed. Further, the changing unit 28 calculates RGB data for expressing these lightness, saturation, and hue angle. FIG. 17 also shows the RGB data. This RGB data is RGB data in which a change in brightness is reflected.

  Next, the changing unit 28 changes the RGB data of the character 66 to the RGB data in which the change in the brightness is reflected, thereby generating a character image in which the brightness of the character 66 is changed. FIG. 18 shows the character image 68. In the character image 68, the brightness of the character 66 is changed from the character image 62. The color of the background image 64 has not been changed. The brightness of the character 66 is changed so that the evaluation value of the visibility becomes “3”. Therefore, the character 66 is easier to see in the character image 68 than in the character image 62 before the change.

  In addition, the feeling maintaining determination unit 30 compares the taste of the character image 62 before the change with the taste of the character image 68 after the change. In the second embodiment, both tastes match. Therefore, the character 66 is not decorated.

  For example, the output unit 33 causes the display unit of the UI unit 14 to display the changed character image 68.

  By changing the brightness of the character 66, a character image 68 is output in which the influence of the superposition on the color relationship between the background image 64 and the character 66 is reduced as compared with the case where the character image 62 is output as it is. . For example, a character image 68 in which the character 66 is easier to see than the character image 62 is output.

  Also in the second embodiment, the changing unit 28 may change the saturation or hue of the character 66 so that the evaluation value of visibility becomes “3”.

(Example 3)
Hereinafter, a third embodiment will be described. In the third embodiment, an image expressing a specific pattern or the like is used as a background image. FIG. 19 illustrates a character image 70 according to the third embodiment. The character image 70 includes a background image 72 expressing a specific pattern or the like, and a character 74 (character string “historical secret story”) superimposed on the background image 72. The character image 70 is an image used for a poster, for example. Here, the user has designated taste “classic”, and a character image 70 having the taste “classic” has been generated.

  Hereinafter, the processing in the third embodiment will be described in detail.

  First, the visibility evaluation unit 26 specifies the color of the character 74 and the representative color (main color) of the background image 72, and specifies the RGB data of each color. The visibility evaluation unit 26 specifies the representative color of the area where the character 74 is superimposed on the background image 72, and specifies the RGB data of the color. In the third embodiment, two colors (representative colors 1 and 2) are specified as representative colors of the background image 72. FIG. 20 shows information of each color. For each of the color of the character 74 and the representative colors 1 and 2 of the background image 72, the PCCS_ID, the hue, the color tone, and the RGB are specified by the visibility evaluation unit 26.

  Next, the visibility evaluation unit 26 calculates lightness, saturation, and hue angle for each of the color of the character 74 and the representative colors 1 and 2 of the background image 72. FIG. 21 shows the lightness, saturation, and hue angle of each color.

  Next, the visibility evaluation unit 26 calculates the lightness difference, the saturation difference, and the hue difference between the color of the character 74 and the representative color 1 of the background image 72, and calculates the color of the character 74 and the representative color of the background image 72. The lightness difference, the saturation difference, and the hue difference between the two are calculated.

The difference between the color of the character 74 and the representative color 1 is as follows.
Lightness difference = 0
Saturation difference = 0
Hue difference = 0

The difference between the color of the character 74 and the representative color 2 is as follows.
Lightness difference = 13.9980
Saturation difference = 16.1106
Hue difference = 19.8214

  Next, the visibility evaluation unit 26 substitutes the lightness difference, the saturation difference, and the hue difference for the evaluation model (visibility model) defined by the above equation (5), thereby obtaining the background image 72. The evaluation value of the visibility of the character 74 with respect to is calculated. Since two colors are specified as the representative colors of the background image 72, the visibility evaluation unit 26 calculates an evaluation value for each representative color.

The evaluation value of the visibility of the character 74 for the representative color 1 is as follows.
Evaluation value of visibility = 0.8799

The evaluation value of the visibility of the character 74 for the representative color 2 is as follows.
Evaluation value of visibility = 1.8801

  The evaluation value (threshold) at which the character superimposed on the background image is assumed to be easy to see is set to “3”. Since the visibility evaluation value calculated as described above is less than the threshold, the visibility evaluation unit 26 determines that the color information of the character 74 needs to be changed.

  In this case, the changing unit 28 does not change the color of the background image 72 and calculates the RGB data of the character 74 for the visibility evaluation value to be “3”. Therefore, as an example, the changing unit 28 changes the brightness of the character 74. That is, the changing unit 28 calculates the brightness difference (the brightness difference between the character 74 and the background image 72) for the evaluation value of the visibility to be “3”, and calculates the brightness of the character 74 from which the brightness difference is obtained. Is calculated. In the third embodiment, since two colors are specified as representative colors, the changing unit 28 calculates a lightness difference for each representative color.

For example, in order to obtain “3” as the evaluation value of the visibility, the lightness difference 1 with the representative color 1 needs to be 37.3370. The lightness difference 2 with the representative color 2 needs to be 33.7205. The brightness at which the character 74 is assumed to be easy to see is calculated by the following equation.
Easy-to-view brightness = (brightness of representative color 2 of background image 72) + (brightness difference 2) = 73.4088
That is, in order for the evaluation value of the visibility to be “3”, the lightness of the character 74 needs to be 73.4008. If the lightness of the character 74 is 73.4008, the evaluation value of the visibility becomes “3” or more in relation to both the representative colors 1 and 2.

  FIG. 22 shows the color information of the character 74 whose brightness has been changed. The brightness has been changed to 73.4008. The saturation and hue angle of the character 74 are not changed. Further, the changing unit 28 calculates RGB data for expressing these lightness, saturation, and hue angle. FIG. 22 also shows the RGB data. This RGB data is RGB data in which a change in brightness is reflected.

  Next, the changing unit 28 changes the RGB data of the character 74 to the RGB data reflecting the change in the brightness, thereby generating a character image in which the brightness of the character 74 has been changed. FIG. 23 shows the character image 76. In the character image 76, the brightness of the character 74 is changed from the character image 70. The color of the background image 72 has not been changed. The brightness of the character 74 is changed so that the evaluation value of the visibility becomes “3”. Therefore, the character 74 is easier to see in the character image 76 than in the character image 70 before the change.

  In addition, sentiment maintenance determination section 30 compares the taste of character image 70 before the change with the taste of character image 76 after the change. For example, the sensitivity maintaining determination unit 30 extracts a base color, a secondary color, and an accent color from the character image 76 after the change, and searches the sensitivity DB 36 for a taste associated with the combination of the colors. FIG. 24 shows the result of the search. The taste corresponding to the base color, the secondary color, and the accent color extracted from the changed character image 70 is “noble”.

  The taste of the character image 70 before the change (taste specified by the user) is “classic”, and the taste of the character image 76 after the change is “noble”, so the two tastes do not match. In this case, the changing unit 28 does not change the color of the character 74, and the display mode changing unit 32 changes the decoration of the character 74. That is, the display mode changing unit 32 changes the decoration of the character 74 without changing the color of the character 74 included in the character image 70 before the change. The display mode changing unit 32 generates, for example, one or more character images in which the decoration of the character 74 has been changed. At this time, the display mode changing unit 32 changes the decoration of the character 74 so that the taste “classic” of the character image 70 is not changed. That is, the display mode changing unit 32 generates one or a plurality of character images in which the decoration of the character 74 is changed while having the taste “classic”.

  For example, the output unit 33 causes the display unit of the UI unit 14 to display a character image in which the character 74 is decorated.

  FIG. 25 shows an example of a character image in which the character 74 is decorated. Here, two character images (character images 78 and 80) in which the decoration of the character 74 has been changed are generated, and the character images 78 and 80 are displayed on the display unit. The character images 78 and 80 have the same taste “classic” as the original character image 70. In the character image 78, a white shadow is given to the character 74 as a decoration. In the character image 80, the character 74 is covered by a white frame. As described above, the display mode changing unit 32 decorates the character 74 so that the character 74 can be easily viewed without changing the color of the character 74. By operating the UI unit 14, the user can select a desired character image from the character images 78 and 80. In the example shown in FIG. 25, the check box 82 linked to the character image 78 is checked by the user, and the character image 78 is selected by the user. The character image 78 selected by the user may be displayed as a final design, printed, transmitted to another device or the like, or stored in a storage device.

  If the taste changes by changing the color of the character, decorating the character without changing the color of the character allows the character to be compared with the case where it has the specified taste but is not decorated. Is generated.

(Example 4)
Hereinafter, a fourth embodiment will be described. In the fourth embodiment, character images with different types of media are generated. FIG. 26 illustrates an original character image according to the fourth embodiment. The character image 84 includes a background image 86 representing a blue sky and a sunflower field, and a character 88 (character string “Summer Festival”) superimposed on the background image 86. The character image 84 is an image used for a poster, for example. Here, when the user operates the UI unit 14, “natural” is designated as the taste, and “postcard” is designated as the media type. In this case, the layout changing unit 24 generates a character image having a postcard shape and size by trimming the background image 86 or changing the position of the character 88 while maintaining the color of the character 88. FIG. 27 shows a character image for “postcard” generated in this manner. The character image 90 includes a background image 92 having the same design as the original background image 86, and a character 94 having the same color as the original character 88. The character 94 is superimposed on the background image 92, and the superimposed position has been changed from the original character image 84. The character image 90 has "natural" as a taste. Hereinafter, the process according to the present embodiment is performed on the character image 90.

  Hereinafter, the processing in the fourth embodiment will be described in detail.

  First, the visibility evaluation unit 26 specifies the color of the character 94 and the representative color (main color) of the background image 92, and specifies the RGB data of each color. The visibility evaluation unit 26 specifies a representative color in a region where the character 94 is superimposed on the background image 92, and specifies RGB data of the color. FIG. 28 shows information of each color. The PCCS_ID, the hue, the color tone, and the RGB are specified by the visibility evaluation unit 26 for each of the color of the character 94 and the representative color of the background image 92.

  Next, the visibility evaluation unit 26 calculates brightness, saturation, and hue angle for each of the color of the character 94 and the representative color of the background image 92. FIG. 29 shows the brightness, saturation, and hue angle of each color.

Next, the visibility evaluation unit 26 calculates a lightness difference, a saturation difference, and a hue difference between the color of the character 94 and the representative color of the background image 92. Hereinafter, these values are shown.
Lightness difference = 19.9199
Saturation difference = 16.7616
Hue difference = 9.15684

Next, the visibility evaluation unit 26 substitutes the brightness difference, the saturation difference, and the hue difference into the evaluation model (visibility model) defined by the above equation (5), thereby obtaining the background image 92. The evaluation value of the visibility of the character 94 with respect to is calculated. The evaluation values of visibility calculated in this manner are shown below.
Evaluation value of visibility = 2.11715

  The evaluation value (threshold) at which the character superimposed on the background image is assumed to be easy to see is set to “3”. Since the visibility evaluation value calculated as described above is less than the threshold, the visibility evaluation unit 26 determines that the color information of the character 94 needs to be changed.

  In this case, the changing unit 28 does not change the color of the background image 92, and calculates the RGB data of the character 94 for the evaluation value of the visibility to be “3”. Therefore, as an example, the changing unit 28 changes the brightness of the character 94. That is, the changing unit 28 calculates the brightness difference (the brightness difference between the character 94 and the background image 92) for the evaluation value of the visibility to be “3”, and calculates the brightness of the character 94 from which the brightness difference is obtained. Is calculated.

For example, in order to obtain a visibility evaluation value of “3”, the lightness difference between the representative color and the representative color needs to be 34.5168. The brightness at which the character 94 is assumed to be easy to see is calculated by the following equation.
Easy-to-see lightness = (lightness of representative color of background image 92) + (lightness difference) = 91.2679
That is, in order for the evaluation value of the visibility to be “3”, 91.2627 is required as the brightness of the character 94.

  FIG. 30 shows the color information of the character 94 whose brightness has been changed. The brightness has been changed to 91.2627. The saturation and hue angle of the character 94 have not been changed. Further, the changing unit 28 calculates RGB data for expressing these lightness, saturation, and hue angle. FIG. 30 also shows the RGB data. This RGB data is RGB data in which a change in brightness is reflected.

  Next, the changing unit 28 changes the RGB data of the character 94 to the RGB data in which the change in the brightness is reflected, thereby generating a character image in which the brightness of the character 94 is changed. FIG. 31 shows the character image. In the character image 96, the brightness of the character 94 is changed from the character image 90. The color of the background image 92 has not been changed. The lightness of the character 94 is changed so that the evaluation value of visibility becomes “3”. Therefore, the character 94 is easier to see in the character image 96 than in the character image 90 before the change.

  In addition, sentiment maintenance determination unit 30 compares the taste of character image 90 before the change with the taste of character image 96 after the change. In the fourth embodiment, both tastes match. Therefore, the character 94 is not decorated.

  For example, the output unit 33 displays the changed character image 96 on the display unit of the UI unit 14.

  Even if the medium is changed from the original character image, changing the brightness of the character 94 makes it possible to compare the color between the background image 92 and the character 94 as compared with the case where the character image 90 is output as it is. A character image 96 in which the influence of superposition on the relationship is reduced is output. For example, a character image 96 in which the character 94 is easier to see than the character image 90 is output.

  Also in the fourth embodiment, the changing unit 28 may change the saturation or the hue of the character 94 so that the evaluation value of the visibility becomes “3”.

(Example 5)
Hereinafter, a fifth embodiment will be described. In the fifth embodiment, character images with different types of media are generated. FIG. 32 shows an original character image according to the fifth embodiment. The character image 98 includes a background image 100 representing a blue sky and white clouds, and a character 102 (character string “Summer Festival”) superimposed on the background image 100. The character image 98 is an image used for a poster, for example. Here, when the user operates the UI unit 14, “summer-like” is designated as the taste, and “fan” is designated as the media type. In this case, the layout changing unit 24 generates a character image having the shape and size of the fan by trimming the background image 100 or changing the position of the character 102 while maintaining the color of the character 102. FIG. 33 shows a character image for “fan” generated in this manner. The character image 104 includes a background image 106 having the same design as the original background image 100, and a character 108 having the same color as the original character 102. The character 108 is superimposed on the background image 106, and the superimposed position has been changed from the original character image 98. The character image 104 has “summer-like” as a taste. Hereinafter, the process according to the present embodiment is performed on the character image 104.

  Hereinafter, the processing in the fifth embodiment will be described in detail.

  First, the visibility evaluation unit 26 specifies the color of the character 108 and the representative color (main color) of the background image 106, and specifies the RGB data of each color. The visibility evaluation unit 26 specifies a representative color in a region where the character 108 is superimposed on the background image 106, and specifies RGB data of the color. In the fifth embodiment, two colors (representative colors 1 and 2) are specified as representative colors of the background image 106. FIG. 34 shows information of each color. For each of the color of the character 108 and the representative colors 1 and 2 of the background image 106, the visibility evaluation unit 26 specifies the PCCS_ID, the hue, the color tone, and the RGB.

  Next, the visibility evaluation unit 26 calculates brightness, saturation, and hue angle for each of the color of the character 108 and the representative colors 1 and 2 of the background image 106. FIG. 35 shows the lightness, saturation, and hue angle of each color.

  Next, the visibility evaluation unit 26 calculates a lightness difference, a saturation difference, and a hue difference between the color of the character 108 and the representative color 1 of the background image 106, and calculates the color of the character 108 and the representative color of the background image 106. The lightness difference, the saturation difference, and the hue difference between the two are calculated.

The difference between the color of the character 108 and the representative color 1 is as follows.
Lightness difference = 54.8044
Saturation difference = 0.213628
Hue difference = 32.7337

The difference between the color of the character 108 and the representative color 2 is as follows.
Lightness difference = 14.4440
Saturation difference = 28.1427
Hue difference = 27.1889

  Next, the visibility evaluation unit 26 substitutes the lightness difference, the saturation difference, and the hue difference into an evaluation model (visibility model) defined by the above equation (5), thereby obtaining the background image 106. The evaluation value of the visibility of the character 108 with respect to is calculated. Since two colors are specified as the representative colors of the background image 106, the visibility evaluation unit 26 calculates an evaluation value for each representative color.

The evaluation value of the visibility of the character 108 for the representative color 1 is as follows.
Evaluation value of visibility = 4.1462

The evaluation value of the visibility of the character 108 with respect to the representative color 2 is as follows.
Evaluation value of visibility = 2.02414

  The evaluation value (threshold) at which the character superimposed on the background image is assumed to be easy to see is set to “3”. The evaluation value of the visibility for the representative color 1 is 3 or more, but the evaluation value of the visibility for the representative color 2 is less than 3. Therefore, the visibility evaluation unit 26 determines that the color information of the character 108 needs to be changed.

  In this case, the changing unit 28 calculates the RGB data of the character 108 for the visibility evaluation value to be “3” without changing the color of the background image 106. Therefore, as an example, the changing unit 28 changes the brightness of the character 108. That is, the changing unit 28 calculates the brightness difference (the brightness difference between the character 108 and the background image 106) for the evaluation value of visibility to be “3”, and calculates the brightness of the character 108 from which the brightness difference is obtained. Is calculated. In the fifth embodiment, since two colors are specified as representative colors, the changing unit 28 calculates a lightness difference for each representative color.

  For example, in order to obtain “3” as the evaluation value of the visibility, the lightness difference 1 with the representative color 1 needs to be 31.6298. The lightness difference 2 with the representative color 2 needs to be 34.6187.

  There is no lightness at which the above lightness differences 1 and 2 are obtained. That is, even when the brightness of the character 108 is changed to the upper limit or the lower limit, the brightness differences 1 and 2 cannot be obtained. In this case, the changing unit 28 does not change the brightness of the character 108, and the display mode changing unit 32 changes the decoration of the character 108. That is, the display mode changing unit 32 changes the decoration of the character 108 without changing the color of the character 108 included in the character image 104 before the change. The display mode changing unit 32 generates, for example, one or more character images in which the decoration of the character 108 has been changed. At this time, the display mode changing unit 32 changes the decoration of the character 108 so that the taste “summer likeness” of the character image 104 is not changed. That is, the display mode changing unit 32 generates one or a plurality of character images in which the decoration of the character 108 is changed while having the taste “summer-like”.

  For example, the output unit 33 causes the display unit of the UI unit 14 to display a character image in which the character 108 is decorated.

  FIG. 36 shows an example of a character image in which the character 108 is decorated. Here, two character images (character images 110 and 112) in which the decoration of the character 108 has been changed are generated, and the character images 110 and 112 are displayed on the display unit. The character images 110 and 112 have the same taste “summer likeness” as the original character image 104. In the character image 110, the character 108 is decorated with white glow as a decoration. In the character image 112, the character 108 is provided with a black shadow as a decoration. As described above, the display mode changing unit 32 decorates the character 108 so that the character 108 can be easily viewed without changing the color of the character 108. By operating the UI unit 14, the user can select a desired character image from the character images 110 and 112. In the example illustrated in FIG. 36, the check box 114 associated with the character image 112 is checked by the user, and the character image 112 is selected by the user. The character image 112 selected by the user may be displayed as a final design, printed, transmitted to another device or the like, or stored in a storage device.

  If the target visibility is not obtained even if the color of the characters is changed, decorating the characters without changing the color of the characters makes it easier to see the characters compared to the case without decoration Is generated.

(Example 6)
Hereinafter, a sixth embodiment will be described. In the sixth embodiment, character images with different types of media are generated. FIG. 37 shows an original character image according to the sixth embodiment. Character image 116 includes a background image 118 representing a piano, and characters 120 (character string “music festival”) superimposed on background image 118. The character image 116 is, for example, an image used for a poster. Here, when the user operates the UI unit 14, “elegant” is designated as the taste, and “postcard” is designated as the media type. In this case, the layout changing unit 24 generates a character image having the shape and size of a postcard by trimming the background image 118 or changing the position of the character 120 while maintaining the color of the character 120. FIG. 38 shows a character image for “postcard” generated in this manner. Character image 122 includes background image 124 having the same design as original background image 118, and character 126 having the same color as original character 120. The character 126 is superimposed on the background image 124, and the superimposition position has been changed from the original character image 116. The character image 122 has “elegant” as a taste. Hereinafter, the processing according to the present embodiment is performed on the character image 122.

  Hereinafter, the processing in the sixth embodiment will be described in detail.

  First, the visibility evaluation unit 26 specifies the color of the character 126 and the representative color (main color) of the background image 124, and specifies the RGB data of each color. The visibility evaluation unit 26 specifies the representative color of the area where the character 126 is superimposed on the background image 124, and specifies the RGB data of the color. FIG. 39 shows information of each color. The PCCS_ID, the hue, the color tone, and the RGB are specified by the visibility evaluation unit 26 for each of the color of the character 126 and the representative color of the background image 124.

  Next, the visibility evaluation unit 26 calculates lightness, saturation, and hue angle for each of the color of the character 126 and the representative color of the background image 124. FIG. 40 shows the lightness, saturation, and hue angle of each color.

Next, the visibility evaluation unit 26 calculates a lightness difference, a saturation difference, and a hue difference between the color of the character 126 and the representative color of the background image 124. Hereinafter, these values are shown.
Lightness difference = 7.08898
Saturation difference = 1.74552
Hue difference = 5.32299

Next, the visibility evaluation unit 26 substitutes the lightness difference, the saturation difference, and the hue difference into the evaluation model (visibility model) defined by the above equation (5), thereby obtaining the background image 124. The evaluation value of the visibility of the character 126 with respect to is calculated. The evaluation values of visibility calculated in this manner are shown below.
Evaluation value of visibility = 1.31949

  The evaluation value (threshold) at which the character superimposed on the background image is assumed to be easy to see is set to “3”. Since the visibility evaluation value calculated as described above is less than the threshold, the visibility evaluation unit 26 determines that the color information of the character 94 needs to be changed.

  In this case, the changing unit 28 calculates the RGB data of the character 126 for the visibility evaluation value to be “3” without changing the color of the background image 124. Therefore, as an example, the changing unit 28 changes the brightness of the character 126. That is, the changing unit 28 calculates a brightness difference (a brightness difference between the character 126 and the background image 124) for the evaluation value of the visibility to be “3”, and calculates the brightness of the character 126 from which the brightness difference is obtained. Is calculated.

For example, in order to obtain “3” as the evaluation value of visibility, the brightness difference between the representative color and the representative color needs to be 36.6844. The brightness at which the character 126 is assumed to be legible is calculated by the following equation.
Easy-to-see lightness = (lightness of representative color of background image 124) + (lightness difference) = 55.5183
That is, in order for the visibility evaluation value to be “3”, 55.1833 is required as the brightness of the character 126.

  FIG. 41 shows the color information of the character 126 whose brightness has been changed. The brightness has been changed to 55.5183. The saturation and hue angle of the character 126 have not been changed. Further, the changing unit 28 calculates RGB data for expressing these lightness, saturation, and hue angle. FIG. 41 also shows the RGB data. This RGB data is RGB data in which a change in brightness is reflected.

  Next, the changing unit 28 changes the RGB data of the character 126 to the RGB data in which the change in the brightness is reflected, thereby generating a character image in which the brightness of the character 126 is changed. FIG. 42 shows the character image. In the character image 128, the brightness of the character 126 is changed from the character image 122. The color of the background image 124 has not been changed. The brightness of the character 126 is changed so that the evaluation value of the visibility becomes “3”. Therefore, the character 126 is easier to see in the character image 128 than in the character image 122 before the change.

  In addition, the feeling maintaining determination unit 30 compares the taste of the character image 122 before the change with the taste of the character image 128 after the change. For example, the sensitivity maintaining determination unit 30 extracts a base color, a secondary color, and an accent color from the character image 128 after the change, and searches the sensitivity DB 36 for a taste associated with the combination of the colors. FIG. 43 shows the result of the search. The taste corresponding to the base color, secondary color, and accent color extracted from the changed character image 128 is “formal”.

  The taste of the character image 122 before the change (taste specified by the user) is “elegant”, and the taste of the character image 128 after the change is “formal”, so the two tastes do not match.

  In this case, the changing unit 28 searches the emotion DB 36 for color information (base color, secondary color, and accent color) associated with the taste “elegant”. That is, the color information associated with the taste “elegant” is color information for expressing the taste “elegant”. FIG. 44 shows an example of the search result. The change unit 28 searches the color information group linked to the taste “elegant” for color information that can obtain an evaluation value of visibility of a value “3” or more. For example, the base color with the color scheme ID “18” is the same as the representative color of the background image 124, and when the accent color with the color scheme ID “18” is used as the color of the character 126, the evaluation value of the visibility is 3 0.0856. In this case, the changing unit 28 changes the color of the character 126 to an accent color with the color scheme ID “18”.

  FIG. 45 shows a character image in which the color of the character 126 has been changed. In the character image 130, the color of the character 126 has been changed to the accent color with the color scheme ID “18”. The color of the background image 124 has not been changed. The color of the character 126 whose visibility evaluation value is “3” or more has been changed. Therefore, the character 126 is easier to see in the character image 130 than in the character image 122 before the change. The taste is not changed before and after the color of the character 126 is changed.

  In the above embodiments and examples, the changing unit 28 changes only the color of the character. However, the evaluation value of the visibility is changed while changing the color of the character or without changing the color of the character. The color of the background image may be changed so as to be “3” or more. For example, the changing unit 28 changes the color of the background image within a range in which the taste of the character image does not change. Usually, since the range occupied by the background image is wider than the range indicated by the character, the background image is considered to have a stronger influence on the taste of the character image than the character. That is, when the color of the background image is changed, it is considered that the possibility that the taste of the character image is changed is higher than when the color of the character is changed. Therefore, by changing the color of the character without changing the color of the background image, it is possible to suppress a change in the taste of the character image. Even if the color of the background image is changed, the color of the background image may be changed if the taste of the character image is not changed. For example, when one color box is used as a background image, the effect of changing the color of the background image on the taste may be smaller than when a background image representing a landscape, a building, an object, or the like is used. . Therefore, when the background image is a color box, the color of the background image may be changed.

  Further, the changing unit 28 changes the position of the character to a position where the evaluation value of the visibility is equal to or more than the threshold value (“3”) while changing the color of the character or without changing the color of the character. Is also good. In this case, the changing unit 28 arranges the character at a position where the taste does not change before and after the change.

  In the above embodiments and examples, the color of the character is changed so that the evaluation value of the visibility is equal to or more than the threshold value ("3"). The color of the character described above may be changed so that the evaluation value is less than the threshold value. By doing so, the visibility of the characters included in the character image is degraded, and the confidentiality of the information is higher than, for example, the case where the evaluation value is equal to or greater than the threshold value. The specific color relationship in this case is a relationship with good visibility, and the color of the character is changed so that the color relationship does not correspond to the specific color relationship (so that the visibility deteriorates).

Reference Signs List 10 information processing device, 12 communication unit, 14 UI unit, 16 storage unit, 18 processor, 20 reception unit, 22 media selection unit, 24 layout change unit, 26 visibility evaluation unit, 28 change unit, 30 sensitivity maintenance determination unit, 32 display mode changing unit, 33 output unit, 34 visibility DB, 36 sensitivity DB.

Claims (12)

Extracting means for receiving character image data including background image data and character data superimposed on the background image data, and extracting representative color information of the background image data in an area where the character data is superimposed;
When the color relationship between the color information of the character data and the representative color information corresponds to a specific color relationship, changing means for changing the character data so that the color relationship does not correspond to the specific color relationship,
Output means for outputting document image data including the character data after the change and the background image data,
Information processing device having The color relationship is a relationship related to the visibility of the character data with respect to the background image data,
The information processing apparatus according to claim 1, wherein: The visibility of the character data with respect to the background image data is determined by a numerical value using a plurality of types of color parameters included in each of the color information and the representative color information,
When the numerical value is less than a threshold, the change unit changes the character data, assuming that the color relationship corresponds to the specific color relationship.
The information processing apparatus according to claim 2, wherein: The change means changes the color information as a change of the character data,
The information processing apparatus according to claim 1, wherein: The color relationship is a relationship related to the visibility of the character data with respect to the background image data,
The change unit changes the color information so as to improve the visibility as a change in the character data.
The information processing apparatus according to claim 4, wherein: The color information includes brightness information indicating the brightness of the character data,
The representative color information includes brightness information indicating the brightness of the background image data,
The changing means changes the brightness of the character data as a change of the character data,
The information processing apparatus according to claim 5, wherein: The changing unit changes the brightness of the character data so that a difference between the brightness of the character data and the brightness of the background image data is equal to or greater than a brightness difference threshold.
The information processing apparatus according to claim 6, wherein: The change unit, when there is no color information of the character data whose difference is equal to or greater than the brightness difference threshold, changes the display mode of the character data as a change of the character data.
The information processing apparatus according to claim 7, wherein: The color information includes saturation information indicating a saturation of the character data and hue information indicating a hue of the character data,
The representative color information includes saturation information indicating the saturation of the background image data and hue information indicating the hue of the background image data,
The changing unit changes at least one of saturation and hue of the character data as the change of the character data.
The information processing apparatus according to claim 5, wherein: The changing unit may include, when the impression of the character image data including the character data after the change is different from the impression of the character image data including the character data before the change, as the change of the character data, Changing the display mode of the character data without changing information;
The information processing apparatus according to claim 1, wherein: The color relationship is a relationship related to the visibility of the character data with respect to the background image data,
The visibility of the character data with respect to the background image data is included in each of the color information and the representative color information, and is determined by color parameters relating to each of lightness, saturation, and hue,
The changing unit may further use an evaluation model defined by a difference between brightness, saturation, and hue between the character data and the background image data, and the color relationship may correspond to the specific color relationship. Judge whether to do,
The information processing apparatus according to claim 1, wherein: Computer
Extracting means for receiving character image data including background image data and character data superimposed on the background image data, and extracting representative color information of the background image data in an area where the character data is superimposed;
Changing means for changing the character data so that the color relationship does not correspond to the specific color relationship, when the color relationship between the color information of the character data and the representative color information corresponds to a specific color relationship,
Output means for outputting document image data including the character data after the change and the background image data,
A program to function as