JPH10145540A - Image reader and recording medium recording image processing control program readable by computer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inform a relation between an image received actually and resolution of a scanner accurately to a user. SOLUTION: An image read part 10 includes a line sensor and an image of a silver salt film is converted into an image signal by scanning the image on the silver slat film. An operation part 22 sets a parameter relating to reading the above stated image by the image read part 10. A CPU 21 obtains resolution decided with the parameter set by the operation part 22 and when the obtained resolution exceeds the highest resolution readable by the image read part 10, a warning indication is displayed on a display part 23. The warning display is performed, in the case that the resolution obtained by an indicator of a bar 48A shape is indicated with a real resolution mark 48B, so that a region over the highest resolution is set to be a red warning region.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus constructed in combination with a film scanner or the like, and a recording medium storing a computer-readable image processing control program for controlling image processing by a computer. .

[0002]

2. Description of the Related Art In recent years, with the spread of personal computers, it has become easy to print out a photograph or the like by performing image processing for adding various special effects to the captured image with a scanner. It has become

[0003]

By the way, scanners used for this kind of application are generally of the line sensor type, and the maximum resolution is physically determined from the pixel pitch of the line sensor. . On the other hand, the user
Since the capturing condition can be set arbitrarily, when the set condition, for example, the number of pixels exceeds the maximum resolution of the scanner, the missing image is automatically interpolated and captured.

However, with such automatic interpolation, the user cannot know whether or not the actually captured image exceeds the maximum resolution of the scanner.

[0005] In other words, for a user who wishes to faithfully capture the original image in a specific application, whether the software-based image interpolation is not desirable but exceeds the maximum resolution? For some reason, images may be captured and processed at a resolution higher than the highest resolution.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide an image reading apparatus capable of accurately transmitting the relationship between an actually captured image and the resolution of a scanner to a user. And

Further, the present invention provides a computer-readable image processing control control for causing a computer to function as an image reading apparatus capable of accurately transmitting the relationship between an actually captured image and the resolution of a scanner to a user. An object is to provide a recording medium on which a program is recorded.

[0008]

In order to achieve the above object, an image reading apparatus according to the present invention obtains a resolution determined by a parameter set for converting an image into an image signal, and obtains the determined resolution. A warning display is provided when the value exceeds the maximum resolution readable by the image reading apparatus.

That is, a resolution is obtained from a parameter set by the user, and if the resolution exceeds the maximum resolution, a warning is displayed. Further, the image reading apparatus according to the present invention includes an imaging unit that includes a line sensor, converts the image into an image signal by scanning the image, and a parameter setting unit that sets parameters related to reading of the image by the imaging unit. A resolution calculating means for obtaining a resolution determined by a parameter set by the parameter setting means; and a display means for displaying a warning when the resolution obtained by the resolution calculating means exceeds the maximum resolution readable by the imaging means. And characterized in that:

That is, the resolution calculation means obtains an apparent resolution (referred to as an input resolution or a capture resolution) from parameters related to image reading by the imaging means set by the user using the parameter setting means.
When the resolution calculated by the resolution calculation means exceeds the maximum resolution readable by the imaging means, that is, the maximum resolution physically determined by the pixel pitch of the line sensor, the display means displays a warning.

[0011] A recording medium on which a computer-readable image processing control program according to the present invention is recorded,
A recording medium recording a control program for controlling image processing by a computer, parameter input means for inputting parameters related to image capture,
Resolution calculating means for calculating the resolution of the captured image based on the parameters input by the parameter input means; and outputting warning information when the resolution calculated by the resolution calculating means exceeds the maximum resolution of the image. A computer-readable image processing control program for functioning as output means is recorded.

That is, parameter input means for inputting parameters relating to image capture, resolution calculation means for calculating the resolution of the captured image based on the parameters input by the parameter input means, and resolution calculation means for calculating the resolution of the captured image. A computer-readable image processing control program for functioning as output means for outputting warning information when the resolution exceeds the maximum resolution of the image is recorded on a recording medium. This makes it possible to control image processing by a computer that has read the image processing control program from the recording medium.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a diagram illustrating a configuration of an image reading apparatus according to an embodiment of the present invention. This image reading apparatus includes an image reading unit 10 such as an image scanner or a film scanner, and a personal computer (P
C) 20.

Although not shown, the image reading section 10 includes a line sensor. Hereinafter, the image reading apparatus 10 will be described as being a film scanner. That is, the image reading unit 10 reads an image on a silver halide film by a line sensor, and
Output to C20.

On the other hand, as shown in FIG.
It comprises a PU 21, an operation unit 22, a display unit 23, a memory 24, an internal storage device 25, and an output unit 26. Here, the CPU 21 controls the entire image reading apparatus including the image reading unit 10 and the PC 20 according to a control program stored in the memory 24.

The operation section 22 is composed of a pointing device such as a keyboard and a mouse. This operation unit 22
The image reading unit 10 is used to set parameters related to image quality and the like when reading a film image. A display unit 23 such as a display performs display of an image read by the image reading unit 10, display of parameters set by the operation unit 22, and warning display as described later. The output unit 26 such as a printer prints out the captured film image.

The memory 24 and the internal storage device 25 store a control program of the CPU 21, image information read by the image reading unit 10, parameters set by the operation unit 22, and the like. That is, the image information read by the image reading unit 10 and the parameters set by the operation unit 22 are temporarily expanded in the work area of the memory 24 and, if necessary, the internal storage device 25 constituted by a hard disk (HD). Is stored in

The control program is for causing the PC 20 to function as a part of the image reading device. The control program is read out from the internal storage device 25 and expanded in the memory 24. This is executed by the CPU 21. In this case, this control program
Floppy disk (FD) and optical disk (CD-RO
M) or the like, and may be stored in an external storage medium 30 and stored or expanded in the internal storage device 25 or the memory 24 as necessary.

The image information read by the image reading unit 10 stored in the memory 24 or the internal storage device 25 is transferred to an external storage medium 3 such as an FD or a magneto-optical disk (MO).
It is also possible to store it at 0.

In this configuration, the image reading unit 10
The film image is read under predetermined setting conditions by the control signal of U21. That is, when parameters (number of pixels, output size, output resolution, trimming range, etc.) related to the image quality and size of the captured image are set by the operation unit 22, the CPU 21 outputs a control signal corresponding to the setting to the image reading unit 10. Output to The display unit 23 displays a control screen when parameters are set by the operation unit 22 in addition to an image capture screen that displays an image captured by the image reading unit 10. The control screen includes set parameter information and resolution information including a warning display.

FIGS. 2 and 3 show control screens displayed on the display unit 23. FIG. That is, the control screen 40A of FIG. 2 is a screen in a dpi (dot per inch) mode set when the image reading apparatus is activated. The dpi mode is a mode convenient for print output and the like. On the other hand, the control screen 40B in FIG. 3 is a screen at the time of the pixel mode which is switched from the dpi mode. The pixel
The mode is a mode for setting the image quality to be captured (the number of vertical and horizontal pixels).

Pre-scan button 41, scan button 42, dpi button 43, and pixel button 4 are used as operation buttons common to both control screens 40A and 40B.
4 and an end button 45 are displayed. These buttons can be pressed by, for example, moving a mouse cursor (not shown) with a mouse and clicking. Alternatively, the user can move the cursor (not shown) by operating a cursor moving key or a tab key on the keyboard, and press the key by operating an enter key.

Here, the pre-scan button 41 is a button for instructing the image reading section 10 to read a film image at a simply fixed resolution. Scan button 4
Reference numeral 2 denotes a button for instructing the image reading unit 10 to read an image based on the set parameters. When the prescan button 41 is pressed, the film image is read by the image reading unit 10 at the fixed resolution, and the captured prescan image is displayed in the prescan image display area 4.
6 is displayed.

The dpi button 43 is a button for designating a dpi mode.
Is a button for designating the pixel mode.
The control screen 40A of FIG. 2 displays a dpi button 4 to indicate to the user that the dpi mode is designated.
3 is highlighted (shown by hatching in the figure). Similarly, the control screen 40B of FIG.
To indicate to the user that the el mode has been specified,
The pixel button 44 is highlighted.

The end button 45 is a button for giving an instruction to end the control program for causing the PC 20 to function as a part of the image reading apparatus. on the other hand,
As a display common to these control screens 40A and 40B, an input resolution display area 47 and an indicator 48 are provided.

Here, the input resolution display area 47 indicates the resolution a when the image reading unit 10 reads a film image.
(However, if the maximum resolution of the image reading unit 10 is exceeded,
A pseudo resolution obtained by reading at the highest resolution and interpolating for the shortfall) is displayed. The indicator 48 displays the area of the actual reading resolution in blue with the center as the highest resolution of the image reading unit 10, displays the area of the pseudo resolution in red warning, and is set by the operation unit 22. The resolutions (parameter resolutions) calculated based on the parameters are displayed in a superimposed manner.

That is, as shown in FIG. 1B, in this indicator 48, the state of the resolution is indicated by a bar 48A.
It is performed with the display of the shape. The area near the center is set to the actual maximum resolution, the left side is set to the area where the image can actually be captured, and the right side is a pseudo-resolution area created by interpolating the image captured at the maximum resolution. Set to. Here, the area where the image can be captured at the actual resolution is displayed in a color such as blue which indicates safety. On the other hand, the area where the image can be read at the pseudo resolution is displayed in a color such as red which can be recognized as a warning. The resolution (parameter resolution) set by the setting parameter is displayed on the bar 48A by an actual resolution mark 48B such as an arrow. It should be noted that the position of the highest resolution is not centered as shown in this figure, but may be biased to either side, for example, to widen the area on the low resolution side or widen the area on the high resolution side. good. As for the interpolation processing performed when the maximum resolution is exceeded, interpolation processing such as interpolating two captured pixel data using a linear operation or performing interpolation using a quadratic function using three pixel data is used. However, the present invention also includes a process in which one of the two pixel data is directly used as the interpolation data.

On the control screen 40A in the dpi mode in FIG. 2, an output resolution input area 49 and an output size input area 50 are provided as unique input areas. Here, the output resolution input area 49 corresponds to the output unit 26 such as a printer.
Area for inputting the numerical value of the resolution f of the final output at The output resolution input area 49 includes a button 49A.
Is provided, and when the button 49A is pressed, several predetermined values of the output resolution f are displayed in a pull-down menu format.
It is also possible to set the output resolution f.

The output size input area 50 is connected to the output unit 2.
6 is an area for inputting the actual size (inch) of the final output as a numerical value. This actual size is represented by a horizontal size g × a vertical size h.

Then, the input resolution a is calculated based on the initialized values or the user set values of the output resolution f and the output sizes g and h, and the calculated value is displayed in the input resolution display area 47. The indicator 48 is displayed according to the calculated value.

On the other hand, on the control screen 40B in the pixel mode in FIG. 3, a fetched pixel size input area 51 is provided as a unique input area. The capture pixel size input area 51 is an area for numerically inputting the number of capture pixels in a set range. This is the number of horizontal pixels c
X Indicates the number of vertical pixels d.

Then, the input resolution a is calculated based on the initialized values or the user set values of the captured pixel sizes c and d, and the calculated value is displayed in the input resolution display area 47, and the calculated value is calculated. The indicator 48 is displayed according to the value.

FIG. 4 is a flowchart of a control program of the image reading apparatus executed by the CPU 21. That is, first, an initialization process is performed (step S
1). In the initialization process, the image reading unit 10 is initialized, and the control screen 40A in the dpi mode shown in FIG. In this case, the parameters, output resolution f and output size g,
The initialization value is set as h, and the input resolution a and the indicator 48 are displayed based on the initialization value.

Next, it is determined whether the end button 45 has been pressed (step S2). When the end button 45 is pressed, the present sequence ends. Exit button 4
If No. 5 has not been pressed, it is next determined whether the pre-scan button 41 has been pressed (step S
3). If the pre-scan button 41 has not been pressed, the process returns to step S2.

When the prescan button 41 is pressed, the image reading section 10 is driven to read a film image and take it in as a prescan image (step S4).
In this case, the image reading unit 10 has a certain fixed resolution,
That is, a film image is read at a resolution that satisfies the condition that the time is short without any problem in display on the entire screen.

The data in the pre-scan image display area 46 is once cleared (step S5), and the captured pre-scan image is displayed there (step S6).
Here, it is determined whether or not the scan button 42 has been pressed (step S7). When the scan button 42 is pressed, a scan process is performed (step S8),
The process returns to step S2. This scanning process is a process of reading a film image by the image reading unit 10 using the set parameters and loading the film image into the memory 24, which will be described in detail later.

If the scan button 42 has not been pressed, it is determined whether the dpi button 43 has been pressed (step S9). When the dpi button 43 is pressed, a parameter setting process A for setting output resolution and size parameters is performed on the control screen 40A shown in FIG. 2 (step S10). Then, based on the set parameters, the input resolution a is displayed in the input resolution display area 47, the indicator 48 is displayed (step S11), and the process returns to the step S7.

The parameter setting processing A in step S10 is performed as shown in FIG.
That is, first, the output resolution f is set to the output unit 26 such as a printer (step S10A). Next, the actual size g, h (inch) of the output to the output unit 26 is set (step S10B). In this case, when the size of the A4 sheet or the like is predetermined, the user simply inputs one of g and h, and the other is automatically set. Then, the parameter resolution is calculated based on the parameters f, g, and h thus set (step S10C), and the process returns to the upper sequence. It is needless to say that steps S10A and 10B may be performed in the reverse order.

Here, the calculation of the parameter resolution in step S10C is based on the image capture size, horizontal Xp, vertical Y
p (inch), output resolution f, output size horizontal g, vertical h
(Inch). That is, Xp and Yp when the trimming operation is not performed are the size of the entire screen of the film mounted on the image reading unit 10. Therefore, the parameter resolution in the horizontal direction is g × f / Xp, and the parameter resolution in the vertical direction is obtained by h × f / Yp. Then, the higher of the resolutions in the horizontal and vertical directions is set as the parameter resolution.

On the other hand, in step S9, dpi
If it is determined that the button 43 has not been pressed,
Next, it is determined whether or not the pixel button 44 has been pressed (step S12). When the pixel button 44 is pressed, the control screen 40 shown in FIG.
B is displayed, and a parameter setting process B for setting the number of pixels to be captured is performed (step S13). Then, based on the set parameters, the input resolution a is displayed in the input resolution display area 47, the indicator 48 is displayed (step S11), and the process returns to the step S7.

Here, the parameter setting processing B in step S13 is performed as shown in FIG. That is, first, the captured image size (number of pixels)
c and d are set (step S13A). Then, the parameter resolution is calculated based on this (step S13B). Thereafter, the process returns to the upper sequence.

In this case, the parameter resolution is determined based on the image capture size horizontal Xp, vertical Yp (inch) and the number of captured pixels horizontal c and vertical d. That is, Xp and Yp when the trimming operation is not performed are the size of the entire screen of the film mounted on the image reading unit 10. Therefore, the parameter resolution in the horizontal direction is c / Xp, and the parameter resolution in the vertical direction is obtained by d / Yp. Then, the higher of the resolutions in the horizontal and vertical directions is set as the parameter resolution.

On the other hand, in step S12, pi
If it is determined that the xel button 44 has not been pressed, it is next determined whether or not a trimming operation for designating a region to be cut out on the image has been performed (step S1).
4). When performing a trimming operation, two points P in the prescan image displayed in the prescan image display area 46 are displayed.
A rectangle having a diagonal of 1 and P2 is set as an image reading area (step S15). Since the trimming operation and the setting of the image reading area by the trimming operation are known techniques, the description thereof is omitted here. When the image reading area is set in this way, the process returns to step S7. If this trimming operation is not performed, it means that the entire screen of the prescan image has been selected.

If it is determined in step S14 that the trimming operation has not been performed, it is next determined whether or not the prescan button 41 has been pressed (step S14).
16). If the pre-scan button 41 is pressed, the process returns to step S4, and the pre-scan image is taken again.

If the prescan button 41 has not been pressed, it is determined whether the end button 45 has been pressed (step S17). If the end button 45 has not been pressed, the process returns to step S7. If the end button 45 has been pressed, the present sequence ends.

The scanning process in step S8 is performed as shown in FIG. That is, first, an image capture screen 60A as shown in FIG. 7A is displayed on the display unit 23 instead of the control screen 40A or 40B (step S8A).

Here, the image capture screen 60A is a screen displayed while the scan button 42 is pressed and an image is captured. This screen is displayed until the stop button 61 is pressed or the designated image area is captured. That is, an operable stop (STOP) button 61 is arranged on the screen 60A, and a capture display area 63 for sequentially displaying captured images is provided in a predetermined area of the image display area 62. When the entire display area 63 is filled with the image, the image capture is completed.

That is, a film image for one line is read by a line sensor (not shown) of the image
4 (step S8B). Then, the captured images are sequentially displayed in the capture display area 63 of the image reading screen 60A (step S8C). In this case, when the size of the captured image is larger than the captured display area 63, the captured image is thinned out and displayed so as to be within a predetermined size (a size that can be entirely displayed). In this way, the amount of data being read can be determined at the same time.

Then, it is determined whether or not the stop button 61 has been pressed (step S8D). When the stop button 61 is pressed, the image capture screen 60A
Is completed, and the original control screen 40A or 40B is displayed (step S8E). Thereafter, the process returns to the upper sequence.

If the stop button 61 has not been pressed, it is determined whether or not all the images have been captured (step S8F). Here, if the capture has not been completed, the line sensor of the image reading unit 10 is moved to the next line in order to capture the image of the next line (step S8G). Then, the above step S8
Return to B.

When the capture of all the images is completed, the image capture screen 60A shown in FIG.
The screen is changed to the image capturing screen 60B as shown in FIG. 7B, and all image data is displayed (step S8H).
In this case, when all the image data does not fit in the image display area 62, the display is performed on the scroll screen.

That is, FIG. 7B shows an image capture screen 60B displayed in place of the image capture screen 60A when the image capture is completed. Operable buttons on the image capture screen 60B are saved (SAVE)
Button 64, screen enlargement / return button 65, end button 6
6. There are vertical scroll buttons 67A and 67B and horizontal scroll buttons 68A and 68B.

Here, the save button 64 is a button for giving a processing instruction regarding saving of an image. The screen enlargement / return button 65 is a toggle button. When the image capture screen 60 </ b> B is displayed while being enlarged and displayed on the entire display screen of the display unit 23, the screen is returned to the original size. A button for instructing to enlarge the image capturing screen 60B to the entire display screen by pressing the button when the image is not enlarged to the entire display screen. The end button 66 is displayed on the image capture screen 6.
A button for giving an instruction to end 0B. Then, scroll buttons 67A, 67B, 68A, 68B
Are buttons for giving an instruction to move the screen in each direction.

When all the image data has been displayed, it is determined whether or not the save button 64 has been pressed (step S8I). This save button 64
Is pressed, the image is recorded in the internal storage device 25 as a predetermined file (step S8J). Thereafter, the process returns to step S8I.

If the save button 64 has not been pressed, it is determined whether or not the end button 66 has been pressed (step S8K). This end button 6
If 6 has not been pressed, the process returns to step S8I. When the button is pressed, the process proceeds to step S8E, the image capturing screen 60B is terminated, the original control screen 40A or 40B is displayed, and then the sequence returns to the upper sequence.

As described above, the relationship between the resolution of the parameter set by the user and the maximum resolution of the image reading device can be clearly understood, and the case where the resolution of the parameter set by the user exceeds the maximum resolution of the image reading device. Is
Alert the user.

In the above-described embodiment, the warning is given in different colors. However, a warning may be given by sound or another display form such as flashing may be combined. In addition, other methods may be used for setting the screen, as long as the resolution can be calculated by parameter setting. For example, the output zoom ratio may be set in addition to the output image size. That is, assuming that the zoom ratio is z, the resolution is z × f in both the horizontal and vertical directions.

The parameter setting may be such that a limit value or a set range value is determined, and other parameters cannot be set. Alternatively, a warning may be issued when setting is attempted.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications and applications are possible within the scope of the present invention. . Here, the summary of the present invention is as follows.

(1) In an image reading apparatus for taking in a film image, parameter setting means for setting each parameter relating to image taking, parameter resolution setting means for setting a resolution set by the parameter setting means, and this parameter resolution setting Resolution calculating means for calculating a resolution based on a parameter set by the means, a resolution calculated by the resolution calculating means,
Display means for displaying the highest resolution relationship of the image reading device.

(2) The image reading device according to (1), wherein the display means displays a warning when the calculated resolution exceeds the maximum resolution. (3) The image reading device according to (1) or (2), wherein the parameter set by the parameter setting unit is information on the number of pixels of the captured image.

(4) The image reading device according to (1) or (2), wherein the parameters set by the parameter setting means are information relating to the capture area and the number of pixels of the capture image.

(5) The image reading device according to (1) or (2), wherein the parameters set by the parameter setting means are information relating to the output size of the captured image and the output resolution.

(6) The image reading device according to (1) or (2), wherein the parameters set by the parameter setting means are information relating to a capture area, an output size of a capture image, and an output resolution.

(7) The image reading device according to (1) or (2), wherein the display means moves the display point of the resolution on the bar display. (8) The image reading device according to (2), wherein the warning display by the display unit moves to a bar display of a different color when the warning is displayed and when the warning is not performed.

(9) An image pickup means including a line sensor for converting the image of the silver halide film into an image signal by scanning the image of the silver halide film, and parameters for reading the image by the image pickup means are set. Parameter setting means, resolution calculating means for obtaining a resolution determined by a parameter set by the parameter setting means, and warning display when the resolution obtained by the resolution calculating means exceeds the maximum resolution readable by the imaging means. An image reading apparatus, comprising: a display unit that performs the following.

(10) The image according to (9), wherein the parameter setting means can set at least one of a reading range of the image of the silver halide film, an output size of the read image, and a resolution of the output image. Reader.

(11) The image reading device according to (9), wherein the image reading device generates an image signal by interpolation when a parameter exceeding the maximum resolution is set.

(12) The image reading device according to (9), wherein the highest resolution is a limit resolution at which a signal obtained by each pixel of the imaging means can be displayed in correspondence with one pixel on a monitor.

(13) The image reading apparatus according to (9), wherein the display means visually or audibly displays. (14) A storage medium used in combination with a film image apparatus, wherein parameter input means for inputting parameters relating to capture of a film image, and a parameter input by the parameter input means,
Resolution calculating means for calculating the resolution of the captured image; and output means for outputting warning information when the resolution calculated by the resolution calculating means exceeds the maximum resolution of the film image. Storage media for capturing film images.

(15) A computer readable medium having computer readable program code means recorded for capturing a film image, wherein the computer readable program code means has a function of inputting parameters relating to film image capture to a computer. First computer readable program means for providing a computer with a function of calculating the resolution of a captured image based on the input parameters; and And a third computer readable program means for providing a computer with a function of outputting warning information when the maximum resolution is exceeded.

(16) In a program storage device readable by a machine for performing a method step of performing a function of capturing a film image, the method step includes a first step of inputting parameters relating to the capture of a film image; A second calculating unit that calculates the resolution of the captured image based on the input parameters;
And a third step of outputting warning information when the calculated resolution exceeds the maximum resolution of the film image. A program storage device readable by a machine.

[0073]

As described in detail above, according to the present invention,
It is possible to provide an image reading apparatus capable of accurately transmitting the relationship between the image actually captured and the resolution of the scanner to the user.

Further, the relationship between the resolution of the parameter set by the user and the maximum resolution of the image reading device becomes clear,
Further, it is possible to provide an image reading apparatus that can warn a user that the resolution of the set parameter exceeds the maximum resolution of the image reading apparatus.

Further, according to the present invention, a computer-readable image processing for causing a computer to function as an image reading apparatus capable of accurately transmitting the relationship between the actually captured image and the resolution of the scanner to the user. A recording medium on which a control program is recorded can be provided.

[Brief description of the drawings]

FIG. 1A is a block diagram of an image reading apparatus according to an embodiment of the present invention, and FIG. 1B is a diagram showing an indicator.

FIG. 2 is a diagram showing a control screen in a dpi mode.

FIG. 3 is a diagram showing a control screen in a pixel mode.

FIG. 4 is an operation flowchart of the image reading apparatus according to the embodiment;

5A is a flowchart of a parameter setting process A in FIG. 4, and FIG. 5B is a flowchart of a parameter setting process B in FIG.

FIG. 6 is a flowchart of a scan process in FIG. 4;

FIGS. 7A and 7B are diagrams illustrating image capture screens during a scan process, respectively.

[Explanation of symbols]

 Reference Signs List 10 image reading unit 20 personal computer (PC) 21 CPU 22 operation unit 23 display unit 24 memory 25 internal storage device 26 output unit 30 external storage medium 40A, 40B control screen 43 dpi button 44 pixel button 46 prescan image display area 47 input Resolution display area 48 Indicator 48A Bar 48B Actual resolution mark 49 Output resolution input area 50 Output size input area 51 Captured pixel size input area

Claims (4)

[Claims] A resolution determined by a parameter set for converting an image into an image signal is determined. If the determined resolution exceeds a maximum resolution readable by an image reading apparatus, a warning is displayed. Characteristic image reading device. 2. An image pickup device including a line sensor, for converting the image into an image signal by scanning the image, a parameter setting device for setting parameters relating to the image reading by the image pickup device, and a parameter setting device. Resolution calculating means for obtaining a resolution determined by a parameter set by the above, and display means for giving a warning display when the resolution obtained by the resolution calculating means exceeds the maximum resolution readable by the imaging means. An image reading apparatus comprising: 3. The image reading apparatus according to claim 2, wherein the resolution calculation means calculates the image based on read area information, output resolution information, and output size information of the image. 4. A recording medium on which a control program for controlling image processing by a computer is recorded, wherein parameter input means for inputting a parameter relating to image capture, and a parameter inputted by the parameter input means. A computer readable program for functioning as a resolution calculating means for calculating the resolution of the captured image; and an output means for outputting warning information when the resolution calculated by the resolution calculating means exceeds the maximum resolution of the image. A recording medium on which an image processing control program is recorded.