JP2000029377A - Visual field experiencing device of spectacles, visual field experiencing method of spectacles and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a visual field experiencing device of spectacles capable of executing image processing at a high speed by adopting the constitution to execute the processing to determine the averaging range at the time of averaging processing of pixel data according to a spreading quantity of luminous fluxes with all the pixels, processing to obtain visual field images by subjecting intermediate images to the averaging processing, etc. SOLUTION: The original image data (color and luminance data of the object surface viewed through spectacles) of the selected images is read into a memory section 14 of a personal computer 10. Next, the direction (distortion) of the object when viewed through lenses is determined and the spread of the luminous fluxes appearing blur is determined for a small number of the pixels. The original images are then processed from the determined direction of the object and the intermediate images added with the distortion when the object is viewed through the spectacle lenses are formed. Further, the averaging range where the pixel data is subjected to the averaging processing according to the spreading quantity of the luminous fluxes is calculated. As a result, the formation of the visual field images added with the blur changing the sharpness depending upon places in addition to the distortion is made possible and the user is able to experience the visual field images in the nearly actual state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for displaying a field-of-view image when viewed with glasses, and more particularly, to a field-of-view experience apparatus for glasses with improved image processing speed of distortion or blur caused by a lens, and a technique for viewing glasses. The present invention relates to a visual field experience method and a recording medium.

[0002]

2. Description of the Related Art When purchasing spectacles, a user selects a spectacle lens and a spectacle frame, and a combination thereof is delivered. When selecting a spectacle lens, wear a lens prepared as a sample in a spectacle shop, check the appearance, and select the one that seems suitable for yourself while listening to the explanation of the clerk. Then, spectacles with the selected spectacle lens mounted on the separately selected spectacle frame are produced and delivered to the user.

Conventionally, it is common for a user to purchase a lens after actually wearing a lens which is considered to be suitable for the user.

[0004]

However, it is not clear how the field of view looks when the glasses with lenses are mounted on the frame until the actually delivered glasses are worn. There are a limited number of eyeglass lenses that are available as samples in stores, and lenses that are not available as samples, or lenses that have properties intermediate to those provided as samples, are suitable for users. When it is determined that the eyeglasses are present, the characteristics of the eyeglasses are not actually known until the eyeglasses actually delivered are worn.

[0005] In particular, a distance area suitable for viewing an object at a long distance, a near area suitable for viewing an object at a short distance, and an intermediate area whose refractive power changes gradually between them. When a progressive multifocal lens provided is selected, the properties of the progressive surface differ depending on the distance and near powers and whether far or near is emphasized. for that reason,
The types of progressive multifocal lenses are enormous, and it is not possible to see how a suitable lens field of view looks for a user by simply multiplying a small number of samples prepared at stores.

Further, it is difficult for even a clerk at an eyeglass shop to explain the state of the visual field in words to a user who has not actually used the progressive lens. Furthermore, the prescription of the spectacle lens is spherical power, astigmatic power, astigmatic axis direction,
A progressive lens has an addition and the like, and if these are different, the appearance changes variously. For this reason, it is impossible to grasp all aspects of the field of view only by the explanation of the sample and the clerk.

[0007] In order to solve such difficulties, a visual field image that can be seen with glasses is displayed on a personal computer or the like, and the user can select the most suitable glasses by simulating the state of the visual field with glasses. It is considered to be. However, since the characteristics of progressive multifocal lenses differ depending on the distance, near, or intermediate regions of the spectacle lens, simply showing the field of view of the entire pair of spectacles will clearly show the user the difference in the characteristics. Is difficult.

Accordingly, the present inventor clearly displays the characteristics of the progressive multifocal spectacle lens to the user, grasps in advance how the progressive multifocal spectacle lens will look, and optimizes the user's personality. We proposed a spectacle viewing experience device and a spectacle viewing experience method for the purpose of selecting a suitable spectacle lens and obtaining a comfortable visual field.

In this case, in order to grasp the visual field characteristics of the spectacle lens, particularly the progressive lens, it is necessary for the user to understand the blur and distortion of the image that necessarily occurs in the visual field. It is necessary to create a field-of-view image with distortion and present it to the user.

By the way, in order to obtain a virtual image viewed through a spectacle lens by strict optical simulation, an object is considered as a group of a large number of point light sources, emitted from each point, and placed at an eye opening (pupil portion). It is sufficient to calculate a large number of incoming light rays, integrate them according to the direction of the light rays, obtain brightness, and create an image. However, this method requires a very large amount of calculations,
The calculation time is extremely long, and is not practical as a visual field experience device. Therefore, it is necessary to create an image that is apparently equivalent to a strict simulation image in a short calculation time.

Reducing the calculation time when creating a visual field image has a great significance in practical use of a visual field experience apparatus. Not only when the processing capacity of the personal computer that performs the calculation processing is low, but also when the processing capacity has room, generating an image in a short time can add value to the visual field experience device. For example, an image can be quickly provided without waiting for the user. In addition, if the user wants to experience the shaking state, it is necessary to create images in different directions of the eyes in real time, which is impossible with conventional image processing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and displays the characteristics of the appearance of spectacle lenses, particularly progressive multifocal spectacle lenses, so that the user can select the most appropriate spectacle lens. An object of the present invention is to provide a spectacle viewing experience device that can perform image processing at high speed.

[0013] The present invention also provides a method for experiencing spectacle lenses, particularly a progressive multifocal spectacle lens, in which a user can select the most appropriate spectacle lens by displaying the characteristics of the appearance of the spectacle lens as an image. It is an object of the present invention to provide a method of experiencing the field of view of eyeglasses that can perform processing at high speed.

It is a further object of the present invention to provide a computer-readable recording medium on which a program for causing a computer to implement the visual field experience method is recorded.

[0015]

According to a first aspect of the present invention, there is provided a spectacle visual field experience apparatus for processing an original image to be viewed through a spectacle lens into a visual field image viewed through the spectacle lens. A spectacle field-of-view experience device comprising: a processing unit and a display unit that displays an image-processed visual field image, wherein the image processing unit determines a light beam of the spectacle lens from data of the original image and characteristics of the spectacle lens. By tracking,
A process of obtaining the direction of the object when viewed through the spectacle lens and the amount of spread of the luminous flux seen out of focus; and a process of creating an intermediate image with a distortion when viewed through the spectacle lens from the obtained direction of the object. A configuration for performing a process of obtaining an averaging range when averaging pixel data in accordance with the spread amount of the light flux for all pixels, and a process of obtaining the visual field image by averaging the intermediate image. I have.

According to a fourth aspect of the present invention, there is provided a method of experiencing a field of view of spectacles, wherein an original image to be viewed through a spectacle lens is image-processed into a field-of-view image viewed by applying the spectacle lens, and the field-of-view image is displayed. An experiential method, wherein the image processing is based on the data of the original image and the characteristics of the spectacle lens, and by ray tracing of the spectacle lens, the direction of an object when viewed through the spectacle lens and the spread of a luminous flux seen out of focus. Calculating an amount, generating an intermediate image with a distortion when viewed through the spectacle lens from the obtained direction of the object, and averaging pixel data according to the spread amount of the light flux. And a step of obtaining the visual field image by averaging the intermediate image.

Further, according to a sixth aspect of the present invention, there is provided a recording medium having a field-of-view experience method in which an original image to be viewed through a spectacle lens is image-processed into a field-of-view image viewed by applying the spectacle lens, and the processed image is displayed. The image processing determines the direction of an object and the amount of spread of a luminous flux seen through the spectacle lens by ray tracing of the spectacle lens from the data of the original image and the characteristics of the spectacle lens. Creating an intermediate image with a distortion when viewed through the spectacle lens from the determined direction of the object; and averaging when averaging pixel data according to the spread amount of the light flux. Computing a method for experiencing the visual field of spectacles, comprising: obtaining a range for all pixels; and averaging the intermediate image to obtain the visual field image. And a computer-readable recording medium storing a program to be executed by the data.

In the present invention, the amount of spread of a light beam which is blurred due to ray tracing is preferably obtained for a small number of pixels.
An averaging range to be averaged is obtained for all the pixels from the spread amount of the light beam, and all pixels of the intermediate image to which distortion has been added are averaged from the obtained averaging range to obtain an image of distortion and blur. By simplifying the process, a visual field image that is apparently equivalent to a strict simulation image can be created at high speed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments.

FIG. 1 shows an example of a device configuration of a spectacle viewing experience device of the present invention. The visual field experience device 1 of the present invention is mainly configured with a personal computer (personal computer) 10 and is a CR as an image display device capable of displaying a visual field image.
T21 and head mounted display (HMD) 2
2 are prepared. A keyboard 23 is provided as an information input device, and a CC 23 is provided as an image input device.
A D camera 24 is provided. Further, a hard disk 25 and a CD-ROM drive 26 are prepared as storage devices capable of storing images or other information. Has become. Further, the personal computer 10 of the present example can be connected to a network such as the Internet, and can exchange image information or information such as software via the network.

FIG. 2 is a block diagram showing a functional configuration of the visual field experience apparatus 1 according to the present invention. First, the personal computer 10, which is the core of the visual field experience device 1, receives a command to operate the visual field experience device 1 from the keyboard 23,
A selection input unit 11 capable of accepting a selection command such as an image type and an image input unit 12 capable of inputting image data of an object to be displayed from the CCD camera 24 are provided. Image processing unit 1 capable of selecting or generating a field-of-view image corresponding to the distance of and outputting the selected image
3 is provided. The storage unit 14 is also provided with a storage unit 14 capable of storing software such as a program for a method of experiencing the field of view of eyeglasses, image information, and a field image that can be selectively displayed. Can be updated at any time from a network such as the Internet. The visual field image generated or selected by the image processing unit 13 is output from the display output unit 16 to the CRT 21 or the HMD 22 and displayed.

Each of these functions is performed by the personal computer 1 as in this example.
However, it is also possible to launch a browser on the personal computer 10, establish a connection with a WWW server at a predetermined address via the Internet, and provide equivalent functions via the personal computer 10. Yes, W
It is also possible to obtain an appropriate visual field image desired by the user from a variety of visual field images from the WW server.

Also, regarding image processing, image information is sent to a host computer via a network, the host computer processes the image, and the personal computer 10 receives and displays the processed image via the network. Good.

This personal computer 10 is installed on a hard disk 25 or the like from a recording medium such as a CD-ROM 27 or a floppy disk in which a program for the method of experiencing the field of view of the glasses is recorded, and reads the program installed in the storage unit 14 to read the program of the glasses. It can function as a visual field experience device.

FIG. 3 shows a schematic flowchart of a process for displaying a visual field image in the visual field experience apparatus 1 for spectacles of the present invention.

First, in step 51, the type of lens whose visual field image is to be displayed is selected and input from the input device 23.

Next, at step 52, an image to be displayed is selected. For example, an image output from the CCD camera 24,
The image is selected from images stored in the storage unit 14 or the hard disk 25 in advance, or images obtained via a network. In the case of a progressive multifocal lens, the distance area, the intermediate area, and the near area of the lens are selectively used according to the distance of the object.For example, an image of a distant object, an image of an object in an intermediate room, or an eye. An original image is selected from among images of the previous book or the like and input from the input device 23. In the progressive multifocal lens, image processing is performed based on characteristics of a lens portion corresponding to a distance of an image selected from a distance area, an intermediate area, and a near area of the lens.

Then, in step 53, the image processing unit 13
Performs image processing based on the characteristics of the selected lens (the selected lens part) based on the image data prepared on the recording medium such as the hard disk 25 or the CD-ROM 27 or the original image data selected by the program, and the field of view image Create

Next, at step 54, the visual field image data output from the image processing section 13 is displayed on the CRT 21, the HMD 22, or the like via the display output section 16.

If the user desires another lens or another image, the flow returns to step 51 to select a lens, select an image, etc., and repeat the above processing. If the user does not want any more images, the process ends.

FIG. 3 shows an example of processing of the visual field experience apparatus of the present invention, and other processing flows are also conceivable. For example, in FIG. 3, the field of view image is created after the selection of the lens and the like is performed. It can also be stored in the unit 14, the CD 27, or the like. This may be more practical when the processing capability of the personal computer 10 of the visual field experience device 1 is low.

Further, the personal computer 10 of this embodiment can be connected to the Internet, and can exchange image information or information such as software via a network.

According to such an eyeglass viewing experience apparatus,
Users can simulate the characteristics of spectacle lenses that appear as blurring or distortion when actually wearing spectacles, and from among a wide variety of spectacle lenses, select from among those that are not available at stores Can also be selected.

The spectacle viewing experience apparatus of the present invention processes original image data to be viewed through a lens in such a viewing experience apparatus at high speed, and converts the characteristics of the lens with distortion and blur into a view image in a short time. The feature is that it can be displayed.

To express the blur of the field of view of the progressive lens,
In the same field of view, it is necessary to partially create images with different degrees of blur. For that purpose, the value of each pixel of the original image may be replaced with the weighted average value of the surrounding pixels according to the blur of the point image due to the ray tracing. That is, if E (i, j) is data representing the brightness of the original pixel, new pixel data E ′ (i, j) is

[0036]

(Equation 1)

Will be replaced by Here, i and j indicate coordinate values of pixels in a matrix _{, and an and m} are n and m.
The weight changes depending on the weight.

However, since the degree of blur varies depending on the position of the pixel and the distance of the object, the range and weight of the averaging operation performed on each pixel differ depending on the pixel. To find the averaging range and weight for each pixel,
A large number of rays need to be calculated, and the calculation still takes time, though not as much as the method described above. Therefore, we need to consider reducing this amount of calculation.

First, the first means for reducing the amount of calculation is to simplify the weight when performing the averaging operation. The weighting factor based on the actual ray tracing takes various values according to the state of aberration of each light beam, but by simplifying this,
All are set to an _{, m} = 1.0 (S varies depending on the range of averaging). This is the lens aberration
This is equivalent to taking up only astigmatism and power deviation, and ignoring all other aberrations. In the case of spectacle lenses, it is known that the effects of astigmatism and power shift are large, and that the effects of other aberrations can be almost ignored. Even if this simplification is performed, there is no significant difference in the visual field image. By making the weighting factors the same, the parameters at the time of performing the averaging operation are only those indicating the range. When only the astigmatism and the power shift are considered, the spread of the point image becomes elliptical,
If the three parameters of the minor axis and the axial direction are determined, the size is completely determined. Therefore, these three parameters may be obtained for each point of the image by ray tracing.

Next, the second measure taken to further reduce the amount of calculation is to reduce the number of light beams for ray tracing. Considering that the astigmatism distribution and power distribution of the progressive lens are continuous, if the object distance is continuous,
It is expected that the amount of blur in the field of view will also change continuously. Therefore, in order to reduce the calculation time, the calculation of the averaging range is stopped for all pixels, the calculation is performed only for a small number of pixels, and the other pixels are obtained by interpolation. Assuming an elliptical shape as the averaging range,
Since there are three parameters defining the size, if the interpolation is performed for each parameter, the parameter for each pixel can be determined. However, since the calculation of averaging is performed for each pixel, it is meaningless to calculate the range too finely. In order to reduce the amount of calculation, the averaging range may not be calculated as a continuous value but may be a discrete value.

The conventional method is to calculate a large number of light rays in order to obtain the blur amount at a certain point. However, the calculation amount can be further reduced. For this purpose, at each point of the pixel, the amount of astigmatism and the spherical power are obtained instead of directly calculating the amount of blur from a large number of light rays incident on the eye, and the range of averaging is estimated from this. In the calculation for obtaining the astigmatism amount and the spherical power, since the paraxial amount is calculated for a certain light ray, the calculation amount is much smaller.

FIG. 4 shows a flowchart in which the image processing unit 13 creates a visual field image by performing image processing on the original image data by simplifying the above-described blur processing. This flowchart shows the contents of the image processing in step 53 in the flowchart shown in FIG.

First, in step 531, the original image data of the selected image is read into the storage unit 14 of the personal computer 10.
Thereby, the data of the color and brightness of the surface of the object viewed through the glasses is input.

Next, in step 532, the direction (distortion) of the object as viewed through the lens is determined, and the spread of the luminous flux that is blurred is determined for a small number of pixels. As described above, for example, as described above, the spread of the light beam is determined by the ray tracing of the spectacle lens. It can be obtained by obtaining parameters.
Further, the spread of the luminous flux can be obtained by obtaining the amount of astigmatism and the spherical power for each point of the pixel.

When calculating the distortion, if the object viewed through the glasses is assumed to be a two-dimensional object such as a photograph or a picture, the distortion-added intermediate image before forming the blurred image is used. The amount of calculation to create can be reduced. In other words, instead of performing ray tracing on all pixels to create a distorted image, only the selected few rays are calculated, and the other pixels are used to interpolate the deformed image based on the result. Ask for it.

Next, in step 533, the original image is processed from the obtained direction of the object to create an intermediate image with a distortion when viewed through a spectacle lens.

Next, at step 534, an averaging range for averaging the pixel data is calculated according to the spread amount of the light beam. In this case, the amount of spread of the light beam obtained in step 532 matches the averaging range to be averaged by the simplified calculation method obtained from the astigmatism amount and the spherical power described above.

Next, in step 535, the averaging range for all pixels is determined by interpolation from the averaging range determined for a small number of pixels.

Next, at step 536, step 533 is executed.
For each pixel of the intermediate image created in the above, the overlapping blurs are integrated and averaged, thereby creating a field-of-view image to which the blur in which the sharpness is changed depending on the location in addition to the distortion is added. be able to.

According to such a spectacle viewing experience device,
It is possible to create a visual field image with almost the same blur and distortion as in the strict simulation while simplifying the image processing. Therefore, it is possible to reduce the load on the image processing function of the personal computer and achieve high-speed image processing. This makes it possible to display, for example, the movement of the field-of-view image when the face with glasses is moved, which could not be realized because of the heavy load on the personal computer. Therefore, it is possible for the user to experience a visual field image in a state closer to the actual state, and the user can easily select a spectacle lens suitable for the user.

(Example 1) By calculating the luminous flux emitted from a certain point on an object and passing through a spectacle lens to the eye, it is possible to determine how much the point appears blurred and in what direction it appears apparently. I understand. What is necessary is just to determine the range when the pixel averaging operation is performed according to the apparent blur amount. Since the point light source has a substantially elliptical blur, the major and minor diameters and the axial direction are determined for each point of the pixel. Since it is difficult to calculate the averaging range for each of a large number of pixels, do not calculate the blur range for all the pixels, calculate for a small number of pixels, and for the other pixels,
I'll find it by interpolation. For example, in the case of a 600 × 800 image, grid points are taken every 20 pixels, and blur is obtained by ray tracing only for those grid points, so that the calculation amount becomes 1/400. In order to obtain the blur amount for pixels other than the grid points, coefficients of an interpolation polynomial are obtained based on the data of the grid points, and the blur amount for each pixel is calculated from the polynomial.

In this manner, the amount of blur for all pixels is obtained, the amount of blur overlapping each pixel is integrated, and the intermediate image obtained by adding distortion to the original image is averaged.
A field-of-view image with blur and distortion can be created.

FIG. 5 is an image showing an example of the visual field image obtained in this way. This field-of-view image shows a case where a table in front of the user at an intermediate distance is viewed using the intermediate area of the progressive multifocal lens. A state in which blur due to astigmatism and a power shift occurs from the center to the lower side of the middle area of the lens is shown.

(Embodiment 2) Embodiment 1 is a method in which a large number of light rays reaching the eyes are calculated in order to determine the amount of blur at a certain point. However, the calculation amount can be further reduced. For this purpose, instead of directly calculating the amount of blur, the amount of astigmatism and the spherical power are obtained at each point, and the amount of blur is estimated from this. In the calculation for obtaining the astigmatism amount and the spherical power, since the paraxial amount of a certain light ray is calculated, the calculation amount is much smaller.

The causes of blurring of an image caused by a lens include astigmatism and power deviation. Astigmatism is inevitably generated in the periphery due to the characteristics of a progressive lens, and has a distribution unique to each lens.The amount of astigmatism is determined by the place where the light beam passes through the lens, and depends on the conditions of the user. Does not depend. On the other hand, the power shift occurs because the distance of the virtual image by the lens exceeds the diopter adjustment range of the user's eye, and varies depending on the user's condition. The distance of the virtual image by the lens changes depending on the distance to the object and the position on the lens through which the light beam passes. Therefore, in order to create an image, it is necessary to calculate the position through which each light beam passes, calculate the astigmatism and the power shift, assuming the distance to the object and the user's condition (diopter adjustment range). is there.

When the far point power of the user is PO and the near point power is P1, if the average power for a light beam passing through one point of the lens is S and the astigmatism amount is A, the blurred image Diameter D
1, D2 and the following relationship hold.

1. 1. When S ≦ PO D1 = α | S-0.5A-PO | D2 = α | S + 0.5A-PO | 2. When PO ≦ S ≦ Pl Dl = 0.5α | A | D2 = 0.5α | A | D1 = α | S-0.5A-Pl | D2 = α | S + 0.5A-Pl | where Pl ≦ S Here, α is a proportionality constant between the aberration amount and the image blur amount. Using this equation, the blur amount of the image can be obtained from the astigmatism amount and the power. Note that the axial direction of the blur may be the axial direction of astigmatism.

[0058]

The spectacle field-of-view experience apparatus and the spectacle field-of-view experience method of the present invention display a field-of-view image when spectacles are worn even without an actual spectacle lens, and the spectacle lens such as blurring or distortion of the lens. The user can experience the characteristics of in a more understandable state. In this case, it is possible to reduce the amount of calculation when creating blur or distortion, reduce the load of image processing, and create a blurred or distorted visual field image at high speed. Therefore, the calculation time is shortened, the time for waiting the user is shortened, and the display of a moving image can be performed. Therefore, the present invention is very useful for the user to select the type of lens and the spectacle frame that achieve the optimal visual field for himself.

Further, the recording medium of the present invention allows a computer to realize such a visual field experience method.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of hardware of an eyeglass viewing experience device of the present invention.

FIG. 2 is a block diagram showing a functional configuration of the eyeglass viewing experience apparatus of the present invention.

FIG. 3 is a flowchart showing a process up to image display by the spectacle viewing experience apparatus of the present invention.

FIG. 4 is a flowchart showing an image processing process in an image processing unit of the eyeglass viewing experience apparatus of the present invention.

FIG. 5 is an image showing an example of a visual field image displayed by the spectacle visual field experience apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 eyeglass viewing experience device 10 personal computer 11 selection input unit 12 image input unit 13 image processing unit 14 storage unit 15 communication function 16 display output unit 21 CRT 22 head mounted display 23 keyboard 24 camera 25 hard disk drive 26 CD-ROM drive 27 compact disk

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Mukaiyama 3-3-5 Yamato, Suwa City, Nagano Prefecture Inside Seiko Epson Corporation (72) Inventor Tadayuki Kaga 3-3-5 Yamato Suwa City, Nagano Prefecture Seikoー Epson Corporation

Claims (7)

[Claims] 1. A spectacle field-of-view experience device comprising: an image processing unit that performs image processing on an original image to be viewed through a spectacle lens with a spectacle lens, and a display unit that displays the image-processed field image. The image processing unit, from the data of the original image and the characteristics of the spectacle lens, by ray tracing of the spectacle lens, the direction of the object when viewed through the spectacle lens and the amount of spread of the luminous flux seen out of focus A process of obtaining, a process of creating an intermediate image with a distortion when viewed through a spectacle lens from the obtained direction of the object, and an averaging process of averaging pixel data according to the spread amount of the light flux A spectacle field-of-view experience device, which performs a process of obtaining a range for all pixels and a process of obtaining the visual field image by averaging the intermediate images. 2. The spectacle field-of-view experience device according to claim 1, wherein the processing for obtaining the spread amount of the light flux is performed from the spherical power of the spectacle lens and the amount of astigmatism. . 3. The spectacle field-of-view experience device according to claim 1, wherein the process of obtaining an averaging range for all the pixels when averaging the pixel data according to the spread amount of the light flux is performed for all the pixels. A spectacle field-of-view experience device, wherein an averaging range is obtained for some pixels, and an averaging range is obtained for all pixels by interpolation based on the averaging range of the some pixels. 4. A spectacle field-of-view experience method for processing an original image to be viewed through a spectacle lens into a field-of-view image viewed by applying the spectacle lens, and displaying the field-processed field-of-view image. From the data of the original image and the characteristics of the spectacle lens, a step of obtaining the direction of the object when viewed through the spectacle lens and the amount of spread of the luminous flux seen out of focus by ray tracing of the spectacle lens, Creating an intermediate image with a distortion when viewed through the spectacle lens from the direction, and obtaining an averaging range for all the pixels when averaging the pixel data according to the spread amount of the light flux; Obtaining the visual field image by averaging the intermediate image. 5. The spectacle field-of-view experience method according to claim 4, wherein the step of obtaining the spread of the light beam is performed by calculating from the spherical power and the amount of astigmatism of the spectacle lens. 6. A spectacle field-of-view experience method for processing an original image to be viewed through a spectacle lens into a field-of-view image viewed with a spectacle lens, and displaying the image-processed field-of-view image.
The image processing, from the data of the original image and the characteristics of the spectacle lens, by ray tracing of the spectacle lens, to determine the direction of the object when viewed through the spectacle lens and the amount of spread of the luminous flux seen blurred, Creating an intermediate image with a distortion when viewed through the spectacle lens from the obtained direction of the object; and averaging the pixel data in accordance with the spread amount of the light flux. A computer-readable recording medium in which a program for causing a computer to execute a method of experiencing a visual field of spectacles, comprising: obtaining a pixel and obtaining the visual field image by averaging the intermediate image. 7. The computer-readable recording medium according to claim 6, wherein the step of obtaining the spread of the light flux is performed by calculating from a spherical power of a spectacle lens and an amount of astigmatism.