JP4471319B2 - Information processing apparatus and method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information processing apparatus and method suitable for displaying, for example, a plurality of images associated with a layout template.
[0002]
[Prior art]
Conventionally, in an image processing device, a color image is read from an external image storage device such as a digital camera into an image processing device such as a word processor, and the image is displayed on a display screen. In addition, image editing processing is performed such as arranging multiple images on the screen, enlarging or reducing each image, moving the position, copying, and displaying the images interchanged. I came.
[0003]
At that time, each image data is usually handled as a separate image file, and a separate layout file for storing the display order, display position, display width, height, image file name, etc. of the plurality of image files is prepared. In general, the display order is changed by editing the layout file.
[0004]
[Problems to be solved by the invention]
However, with the recent spread of information processing equipment, a secondary storage device such as a disk for storing layout files and image files edited by the above editing operation is accessed for another purpose, and the contents are read or changed. Opportunities to perform operations are increasing. Along with this, the layout file and the image file stored in the device are illegally changed, or the data is destroyed due to some error that occurs in the device. It has become difficult to ensure the sex. In the worst case, there is a possibility that an illegal image file other than the image file that should be related to the layout file is associated.
[0005]
The present invention has been made in view of the above-described problem, and it is possible to eliminate an association of an illegal image file when displaying an image registered in a layout file.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an information processing apparatus of the present invention has the following configuration, for example. That is,
An information processing device for displaying an image file stored in a storage device on a display device,
Generating means for generating a layout file in which an image file name of an image file to be displayed and a display position thereof are described ;
Calculating means for calculating a unique value of the image file when the image file name is described in the layout file by the generating means;
Wherein said eigenvalue calculated by the calculating means, as well as added to the layout file in association with the image file name, the specified by the image file name, the particular area of the image file stored in the storage device Additional means for adding eigenvalues ;
When the display of the layout file is instructed, the unique value added in association with the image file name in the layout file is compared with the unique value added to the image file read from the storage device according to the image file name. Comparing means to
Display means for displaying the read image file at a display position set in the layout file when the eigenvalues compared by the comparison means match.
[0007]
The present invention also provides an information processing method realized by the configuration of the information processing apparatus. Further, according to the present invention, a computer-readable storage medium storing a program for realizing the information processing method in a computer is provided.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail and specifically with reference to the accompanying drawings.
[0009]
FIG. 1 is a block diagram showing the configuration of the image processing apparatus according to this embodiment. In FIG. 1, 1 is a central processing unit (CPU), 2 is a read-only memory (ROM), 3 is a readable / writable memory (RAM), and 4 is a read-only memory (externally expanded). External ROM), 5 is a keyboard control device (KBC), 6 is a keyboard (KB), 7 is a display control device (CRTC), 8 is a display device (CRT), and 9 is peripheral. A device control device (PKC), 10 is an external storage device (FD and HD), 11 is a real time clock (RTC), and 12 is a system bus for transmitting and receiving data between these devices.
[0010]
In this apparatus, the control program executed by the CPU 1 exists on the ROM 2 or the RAM 3, and the CPU 1 reads out the program sequentially from the ROM 2 or the RAM 3 through the system bus and performs a target process.
[0011]
2, 3, 4, and 5 are flowcharts for explaining processing by the image processing apparatus of the present embodiment. With reference to this flowchart, the operation of the present apparatus will be described in the following order.
[0012]
First, processing for displaying an image registered in a layout file will be described first. The flowchart of FIG. 2 starts from instructing the image processing apparatus to display an image.
[0013]
First, in step S101, a layout file for displaying an image is designated. In step S102, a variable I indicating which image is being processed is initialized to 1. In step S103, the I-th image layout information is read into the work 1 from the layout file. The work is an area secured on the FD, the HD 10 or the RAM 3 and is referred to or updated during processing by the CPU 1.
[0014]
As shown in FIG. 6, the structure of the layout file is composed of the number N of images registered in the layout file followed by N pieces of image layout information. As shown in FIG. 7, the structure of each image layout information includes an image file name G, an image eigenvalue P, an image horizontal display position X, an image vertical display position Y, an image horizontal display pixel count W, It consists of the number H of vertical display pixels of the image. A fixed-length area is allocated in advance to the area where the file name G of the image is set, an ACSII character string representing the file name is stored from the beginning, and 0 is set to the end. The unique value P of the image is a unique value for each image calculated when the image is registered in the layout file, and the same value is set in both the layout file and the image file at the time of registration.
[0015]
The horizontal display position X and the vertical display position Y of the image represent display positions on the screen. The display screen defines the X axis in the right horizontal direction from the origin and the Y axis in the lower vertical direction from the origin with the pixel at the upper left corner as the origin. When the image is displayed, the image is displayed so that the pixel in the upper left corner of the image is aligned with the pixel specified by X and Y. The horizontal display pixel number W and the vertical display pixel number H of the image represent the display width and height of the image on the screen by the number of pixels.
[0016]
FIG. 8 shows the structure of the image file. Each image file includes the number of horizontal pixels T of the image, the number of vertical pixels V of the image, the number of bits B per pixel, the pixel data array Di, the fixed value C of the footer head, the unique value Q of the image, the head of the image file The offset value F from the footer first to last is stored. When an image is displayed, the image is enlarged and reduced so that the horizontal pixel number T and the vertical pixel number V are matched with the horizontal display pixel number W and the vertical display pixel number H.
[0017]
In step S104, it is checked whether an image file designated by the image file name G of the image layout information read into the work 1 exists. If not, the process proceeds from step S105 to step S120. In step S120, the area corresponding to W pixels in the horizontal direction and H pixels in the vertical direction are blacked out from the display positions X and Y of the layout information of the work 1 so that it can be seen that no image exists.
[0018]
On the other hand, if there is an image file specified by the image file name G, the process proceeds from step S105 to step S106. In step S106, the total number of bytes of the designated image file is acquired and stored in the work 2 as the number of bytes S. In step S107, the offset value F is acquired from the image file and stored in the work 3.
[0019]
In step S108, the offset value F stored in the work 3 is compared with the number of bytes S of the entire image file stored in the work 2, and if the value of F is less than the value of S, that is, the offset value F is If the value is correct indicating the inside of the image file, the process proceeds to step S109. In other cases, that is, when the offset value is an incorrect value indicating outside the image file (F ≧ S), the process proceeds to step S120 described above.
[0020]
In step S109, a fixed value C at the beginning of the footer at the offset value F from the beginning of the image file is acquired from the image file, and stored in the work 4. The fixed value C is a value for determining whether or not the image file is stored according to the format shown in FIG. 8, and is a value of one word or a plurality of words defined as a specific value common to all image processing apparatuses. It is.
[0021]
Next, in step S110, it is checked whether or not the fixed value C is a specific value defined in advance. If the fixed value C matches the specific value, the process proceeds to step S111, and if it is a value other than the specific value. Then, the process proceeds to step S120. In step S111, the eigenvalue Q is acquired from the image file and stored in the work 5. In step S 112, the image unique value P is acquired from the image layout information stored in the work 1 and stored in the work 6. In step S113, the value P stored in the workpiece 6 is compared with the value Q stored in the workpiece 5. If they match, the process proceeds to step S114. If they do not match, the process proceeds to step S120. To proceed.
[0022]
In step S114, the horizontal pixel number T, vertical pixel number V, and bit number B for each pixel are acquired from the designated image file and stored in the work 7. In step S115, the number of bytes Z of pixel data of the image is calculated from the above T, V, and B based on the following calculation formula.
[0023]
Z = T × V × B / 8 (rounded up)
FIG. 9 is a diagram showing the structure of image data when the number of bits B per pixel is 24. As shown in FIG. 9, the image data is composed of a blue (B) component, a green (G) component, and a red (R) component for each pixel, and each component is represented by 1 byte. There are 3 bytes or 24 bits. In addition, when all the components are 0, the minimum luminance, that is, black is represented, and when the respective components are all 255, the age indicates the maximum luminance, that is, white. Such an array of pixel data is stored in the image file by the number of pixels.
[0024]
In step S116, the pixel data Di is read in Z bytes and stored in the work 8. In step S117, the Z-byte pixel data stored in the work 8 is enlarged and reduced to a display width W and a height H at display positions X and Y on the screen. Here, X, Y, W, and H are values specified by the I-th image layout information.
[0025]
In step S118, 1 is added to the variable I to process the next image layout information. In step S119, the value of the variable I is compared with the number N of images. If I is smaller than N, it is determined that there is an image that has not yet been displayed, and the process returns to step S103. If I is greater than or equal to N in step S119, it is determined that the process has been completed, and the process ends.
[0026]
Next, processing for registering an image in the layout file will be described. The flowchart in FIG. 4 starts from instructing the image processing apparatus to register an image.
[0027]
First, in step S201, a layout file for registering an image is designated. In step S202, it is checked whether or not the designated layout file exists. If it exists, the process proceeds to step S203, and if it does not exist, the process proceeds to step S204. In step S203, the number N of images is read from the existing layout file and stored in the work 10, and then the process proceeds to step S206. On the other hand, in step S204, a new layout file designated in step S201 is created, and in step S205, the number N of images in the layout file is initialized to zero. Thereafter, the process proceeds to step S206.
[0028]
In step S206, whether or not to add an image to the layout file is input. If there is no image to be added, the process ends. On the other hand, if there is an image to be added, the process proceeds to step S207, and 1 is added to the number N of images.
[0029]
In step S208, the file name of the image to be registered is input, and the file name of the input image is set as the image file name G of the Nth image layout information. In step S209, the horizontal position X and vertical position Y on the display screen for displaying the image, and the width W and height H for displaying the image are input, and these values are used as the horizontal position of the image of the Nth image layout information. The direction display position X, the vertical display position Y of the image, the horizontal display pixel number W of the image, and the vertical display pixel number H of the image are set.
[0030]
Next, in step S210, the eigenvalue P of the Nth image is calculated. It is sufficient that the eigenvalue itself is calculated based on a conventional random number generation method. Furthermore, the uniqueness of the image can be ensured, for example, by defining the value obtained by adding the number of bytes of the entire image file or the character code representing the file name of the image file as the eigenvalue. Any value can be used. The eigenvalue of the image file calculated in this way is set to the eigenvalue P of the image of the Nth image layout information.
[0031]
Next, by the processing from step S211 to step S213, a footer area as shown in FIG. 8 is generated and added to the end of the image file.
[0032]
As shown in FIG. 10, a normal image file is generally composed of the horizontal pixel number T of the image, the vertical pixel number V of the image, the bit number B for each pixel, and the pixel data array Di. Yes, there is no area to store the eigenvalues of the image. In order to register such an image in the layout file, in this embodiment, a footer area is defined at the end of the image file as shown in FIG.
[0033]
As shown in FIG. 8, an offset value from the first image of the image to the footer region is stored in the footer region untailed, and the offset value is obtained from the image file untailed so that the footer region is untouched. Data can be acquired. Furthermore, in order to be able to inspect at the time of image display processing whether or not the above-mentioned offset value indicates the pre-stability of the footer region, it is common to all image processing devices indicating that it is a footer region. Stores a specific value C.
[0034]
Therefore, first, in step S211, a fixed value C indicating the first-handedness of the footer area is added to the end of the image file to be registered. In step S212, the eigenvalue P calculated in step S210 is set in the footer area as the eigenvalue Q of the image. Finally, in step S213, the number of bytes of the original image file is set as the offset value F at the beginning of the footer, and the process returns to step S206.
[0035]
Through the series of processes shown in the flowcharts of FIGS. 4 and 5, unique values for inspecting the mutual relationship between the layout file and each image file are registered in advance. Then, when an image registered in the layout file is displayed by a series of processes shown in the flowcharts of FIGS. 2 and 3, an illegal image file can be excluded by inspecting an eigenvalue for each image. It becomes possible.
[0036]
Note that the image file shown in FIG. 8 and the layout file shown in FIG. 6 for displaying the image file may be stored in the same storage device. Further, the storage device may be detachable from the image data display device. Thus, by mounting this removable storage device on another image processing device, it is possible to output an image according to the layout file also on the other image processing device.
[0037]
In the present embodiment, the image data is displayed on the display device 8 according to the layout file. However, the output form of the image data is not limited to this. For example, the image data may be printed out on a printer according to the layout file. As a result, even in a system that does not have an image display function, an image can be output according to the created layout file.
[0038]
Note that the present invention can be applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, and a printer), and a device (for example, a copying machine and a facsimile device) including a single device. You may apply to.
[0039]
Another object of the present invention is to supply a storage medium (or recording medium) in which a program code of software that realizes the functions of the above-described embodiments is recorded to a system or apparatus, and the computer (or CPU or CPU) of the system or apparatus Needless to say, this can also be achieved by the MPU) reading and executing the program code stored in the storage medium. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention. Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.
[0040]
Furthermore, after the program code read from the storage medium is written into a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the function is based on the instruction of the program code. It goes without saying that the CPU or the like provided in the expansion card or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.
[0041]
【The invention's effect】
As described above, according to the present invention, when displaying the image registered in the layout file, the eigenvalue registered for each image is inspected, so that it is possible to eliminate the association of an illegal image file. It becomes.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of an image processing apparatus according to an embodiment.
FIG. 2 is a flowchart illustrating image display processing according to the present embodiment.
FIG. 3 is a flowchart showing image display processing according to the present embodiment.
FIG. 4 is a flowchart illustrating image file registration processing according to the present embodiment.
FIG. 5 is a flowchart showing image file registration processing according to the present embodiment;
FIG. 6 is a diagram illustrating a structure of a layout file.
FIG. 7 is a diagram illustrating layout information of each image.
FIG. 8 is a diagram illustrating the structure of an image file after registration.
FIG. 9 is a diagram illustrating the structure of image data when the number of bits B per pixel is 24;
FIG. 10 is a diagram illustrating a structure of an image file before registration.

Claims (4)

An information processing apparatus that displays an image file stored in a storage device on a display device according to a layout file in which an image to be displayed and its display position are described ,
Generation means for generating a layout file in which an image file name of an image file to be displayed and a display position thereof are described ;
Calculating means for calculating a unique value of the image file when the image file name is described in the layout file by the generating means;
Wherein said eigenvalue calculated by the calculating means, as well as added to the layout file in association with the image file name, the specified by the image file name, the particular area of the image file stored in the storage device Additional means for adding eigenvalues ;
When the display of the layout file is instructed, the unique value added in association with the image file name in the layout file is compared with the unique value added to the image file read from the storage device according to the image file name. Comparing means to
An information processing apparatus comprising: display means for displaying the read image file at a display position described in the layout file when the eigenvalues compared by the comparison means match. When the eigenvalues compared by the comparison means do not match, the display means displays in an identifiable manner that there is no image file at the display position of the read image file described in the layout file. The information processing apparatus according to claim 1. An information processing apparatus control method for displaying an image file stored in a storage device on a display device according to a layout file in which an image to be displayed and a display position thereof are described ,
A generation step for generating a layout file in which an image file name of an image file to be displayed and a display position thereof are described ;
A calculation step of calculating a unique value of the image file when the image file name is described in the layout file in the generation step;
The unique value calculated in the calculating step is added to the layout file in association with the image file name, and the specific value of the image file stored in the storage device specified by the image file name is added to the layout file. An additional step of adding eigenvalues ;
When the display of the layout file is instructed, the unique value added in association with the image file name in the layout file is compared with the unique value added to the image file read from the storage device according to the image file name. A comparison step to
And a display step of displaying the read-out image file at a display position described in the layout file when the compared eigenvalues match in the comparison step.   A computer-readable storage medium storing a program for causing a computer to execute each step in the method for controlling the information processing apparatus according to claim 3.

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