JP5115375B2 - Image display device and electronic camera - Google Patents

Description

  The present invention relates to an image display device and an electronic camera including the image display device.

A camera that records positioning data and information about the accuracy of the positioning data together with a photographed image on a photographic film is known as a prior art (see, for example, Patent Document 1).
JP-A-9-127594

  The camera described in Patent Document 1 can detect a location where a user has taken an image later using positioning data. However, if the reliability of the positioning data is low, the location where the image was taken is mistaken. May be recognized.

The image display device according to claim 1, an image file search means for searching for an image file having a predetermined positioning accuracy or more from a plurality of image files having positioning data and positioning accuracy information in the positioning data; Image file display control means for displaying an image of the image file searched by the image file search means on a display, and current position detection means for detecting the current position of the image display device, wherein the image file search means A search is made for an image file whose distance from the current position to the position of the positioning data is within a predetermined distance and having a predetermined positioning accuracy or more, and the image file display control means performs positioning from the current position. The images of the image file are displayed side by side based on the distance to the data position and the positioning accuracy .

  According to the present invention, only an image file having a predetermined positioning accuracy or higher can be displayed.

-First embodiment-
Hereinafter, an electronic camera according to a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows an electronic camera 1. FIG. 1A is a diagram of the electronic camera 1 viewed from an oblique front, and FIG. 1B is a diagram of the electronic camera 1 viewed from an oblique rear. As shown in FIG. 1A, a lens 121 a of a photographing optical system (see FIG. 2, reference numeral 121) and an illumination device 110 that illuminates a subject are provided on the front of the electronic camera 1. Further, the electronic camera 1 is connected to a GPS (Global Positioning System) device 2 and can acquire positioning data and information on the accuracy of the positioning data from the GPS device 2. A release switch 103 a is provided on the upper surface of the electronic camera 1.

  As shown in FIG. 1B, a liquid crystal monitor 104 and operation buttons 103 b to 103 g are provided on the back surface of the electronic camera 1.

  FIG. 2 is a block diagram illustrating the configuration of the electronic camera 1. In FIG. 2, the electronic camera 1 includes a control circuit 101, a memory 102, an operation unit 103, a display monitor 104, a speaker 105, an external interface (I / F) circuit 106, and a memory card interface (I / F). 107, a power source 108, a photometric device 109, an illumination device 110, a map data storage device 111, and a GPS interface (I / F) circuit 112. The electronic camera 1 is connected to the GPS device 2 via the GPS interface circuit 112. A memory card 150 is mounted on the memory card interface 107.

  Based on the control program, the control circuit 101 performs a predetermined calculation using signals output from each part in the electronic camera. The control circuit 101 controls the photographing operation of the electronic camera 1 by sending a control signal to each part in the electronic camera. The control program is stored in a ROM (Read Only Memory) (not shown) in the control circuit 101.

  The control circuit 101 creates an image file from information on imaging conditions acquired from each part in the electronic camera, positioning data acquired from a GPS device and information on the accuracy of the positioning data, image data of a captured image, etc., and the memory 150 Remember me. This image file is created in accordance with an Exif (Exchangeable image file format) image file specification.

   The structure of the image file will be described with reference to FIG. The image file 3 is composed of main image data and a plurality of tags in which auxiliary information of the main image data is described. Among the plurality of tags, a tag 31 that describes whether the positioning position is north latitude or south latitude, a tag 32 that describes the latitude of the positioning position, and whether the positioning position is east longitude or west longitude , A tag 34 that describes the longitude of the measured position, and a tag 35 that describes the reliability of positioning, that is, the accuracy of positioning. The accuracy of positioning is represented by a DOP (Dilution of Precision) value. Hereinafter, the data of the tags 31 to 34 is referred to as positioning data. The positioning data 31 to 34 are data on the current position of the user when the user has taken the image and the current position of the device used for shooting.

  The DOP value is called an accuracy degradation coefficient, and is an index indicating the degree of accuracy degradation due to the positioning satellite positioning. An ideal satellite arrangement when performing positioning by positioning satellites is an arrangement in which the zenith satellite and three neighboring satellites dispersed by 120 ° form a regular triangular pyramid shape. The DOP value of this arrangement is 1. Depending on how many times the precision is inferior to that, it is expressed as an index such as 2, 3, 4,. That is, the positioning accuracy decreases as the DOP value increases. In the GPS device 2, the DOP value is calculated according to how small the volume of the triangular pyramid formed by the four positioning satellites is compared to the case of the DOP value 1.

  The memory 102 in FIG. 2 is used as a working memory for the control circuit 101. The operation unit 103 includes a release button 103a, operation buttons 103b to 103g, and the like, and sends an operation signal corresponding to the operated button to the control circuit 101. The memory card interface 107 writes an image file to the memory card 150 or reads an image file from the memory card 150 according to an instruction from the control circuit 101. The memory card 150 is an external recording medium that can be attached to and detached from the memory card interface 107.

  The display monitor 104 displays information such as an image and text of an image file according to an instruction from the control circuit 101. On the display monitor 104, one image is displayed in a large size, or a plurality of reduced images (thumbnails) are displayed. The speaker 105 outputs sound in response to an instruction from the control circuit 101. The external interface circuit 106 transmits and receives commands and data to and from an external device (personal computer, printer, etc.) via a cable (not shown) according to an instruction from the control circuit 101.

  The power supply 108 includes a battery, a power supply circuit, and the like, and supplies power to each part of the electronic camera 1. The photometric device 109 detects the luminance of the subject by the photometric sensor and sends the luminance information to the control circuit 101. The control circuit 101 calculates exposure setting values such as a shutter speed and an aperture value based on the luminance information. The illumination device 110 illuminates the subject with a predetermined amount of light, for example, flashing when a light emission instruction is issued from the control circuit 101 during photographing. The illumination light is emitted forward of the electronic camera.

  The map data storage device 111 stores map data for displaying a map on the display monitor 104. The GPS interface circuit 112 is an interface for connecting the electronic camera 1 to the GPS device 2.

  The imaging unit 120 includes a photographic optical system 121, an imaging element 122, and an imaging control circuit 123, and performs imaging of a subject in response to an instruction from the control circuit 101. The imaging optical system 121 forms a subject image on the imaging surface of the imaging element 122. As the image sensor 122, a CCD (Charge Coupled Device) image sensor, a CMOS (Complementary Metal Oxide Semiconductor) image sensor, or the like is used. The imaging control circuit 123 drives and controls the imaging element 122 according to an instruction from the control circuit 101 and performs predetermined signal processing on the image signal output from the imaging element 122. The image data after the signal processing is recorded in the memory card 150 as the above-mentioned Exif image file stipulated image file.

  The GPS device 2 measures the position of the GPS device 2 based on the propagation time of the radio wave transmitted from the positioning satellite and the position of the positioning satellite. Since the radio wave is transmitted from the positioning satellite in synchronization with the accurate clock, the GPS device 2 can calculate the propagation time from the radio wave reception time. The radio wave transmitted from the positioning satellite includes orbit data of the positioning satellite, and the GPS device 2 can calculate the position of the positioning satellite from the orbit data. Further, the GPS device 2 calculates the above DOP value.

  With reference to FIG. 4, the image display method of the image file in the 1st Embodiment of this invention is demonstrated. FIG. 4 is a diagram for explaining a display screen of the display monitor 104 that displays an image of an image file stored in the memory card 150. As shown in FIG. 4, on the display monitor 104, images 41a to 41d of image files having a DOP value equal to or less than a predetermined value are displayed side by side as reduced images. Therefore, the image of the image file whose DOP value is larger than the predetermined value is not displayed. The positions of the positioning data of these images 41 a to 41 d are substantially the same positions as the positions where the GPS device 2 connected to the electronic camera 1 is positioning, that is, the current position of the electronic camera 1.

  Further, the images 41a to 41d are displayed from left to right and from the upper level to the lower level in the order from the smallest DOP value to the largest one, that is, from the highest positioning accuracy to the lowest. . Accordingly, the user can recognize that the positioning accuracy of the image 41a is the highest (the DOP value is the smallest), and the positioning accuracy deteriorates (the DOP value increases) as the images 41b, 41c, and 41d progress. .

  With reference to the flowchart of FIG. 5, the image display processing of the image file in the first embodiment of the present invention will be described. The process of FIG. 5 is executed in the control circuit 101 by a program that starts when the user operates the operation buttons 103b to 103g to select the DOP thumbnail display function. Here, DOP thumbnail display refers to displaying an image of an image file as a reduced image based on the DOP value of the image file.

  In step S501, the GPS device 2 measures the current position. In step S502, the DOP value when the current position is measured is acquired from the GPS device 2. In step S503, an image file in which the position of positioning data is the same as the current position is searched from image files stored in the memory card 150. Here, the same as the current position means that the current position and the position of the positioning data are the same within a predetermined allowable range.

  In step S504, an image file having a DOP value equal to or less than the DOP value acquired from the GPS device 2 is searched from the image files searched in step S503. In step S505, a reduced image of the image file searched in step S504 is created. In step S506, the reduced images of the image file are displayed side by side from left to right and from the top to the bottom, in the order from the image of the image file with the small DOP value to the image of the image file with the large DOP value.

According to the first embodiment described above, the following operational effects can be obtained.
(1) An image file having a predetermined positioning accuracy or higher is searched from a plurality of image files having positioning data 31 to 34 and positioning accuracy information 35 in the positioning data, and an image 41a of the searched image file is searched. -41d are displayed on the display monitor 104. Thereby, only an image file having a predetermined positioning accuracy or higher can be displayed.

(2) The images of the image files searched in order from the image file image with high positioning accuracy to the image file with low positioning accuracy are displayed. Thereby, an image with high positioning accuracy can be preferentially selected.

(3) A GPS device 2 for detecting the current position of the electronic camera 1 is provided, and an image file having positioning data substantially matching the current position detected by the GPS device 2 is searched from a plurality of image files. Image files having a predetermined positioning accuracy or higher are searched from the searched image files, and the images 41a to 41d of the searched image files are displayed on the display monitor 104. As a result, it is possible to take a picture or view the scenery with reference to an image taken when the user was in the same place before. In addition, it is possible to recall that the user was in the same place before using the displayed image as a trigger.

The first embodiment described above can be modified as follows.
(1) In the first embodiment described above, an image file having positioning data substantially matching the current position of the electronic camera 1 is searched, and an image file having a predetermined positioning accuracy or higher is searched from the searched image files. The images 41a to 41d of the searched image file are displayed on the display monitor 104. However, an image file having positioning data within a predetermined distance from the current position of the electronic camera 1 is searched, an image file having a predetermined positioning accuracy or more is further searched from the searched image files, and the searched image file is searched. The image of the file may be displayed on the display monitor 104. This is convenient when an image file with high positioning accuracy around the current position is required. For example, it is convenient when shooting around the current position at the same place as when shooting before, or when checking how much the current scenery has changed compared to the old scenery.

(2) In the first embodiment described above, the images of the image file are displayed side by side in the order from the image of the image file with high positioning accuracy to the image of the image file with low positioning accuracy. However, the order of arranging the images in the image file is determined according to the DOP value, that is, the value representing the positioning accuracy, multiplied by the distance from the current position to the position of the positioning data, and the images in the image file are displayed side by side. May be. Thereby, it is possible to determine the order in which the images are arranged by comprehensively determining the positioning accuracy and the distance from the current position. For example, it is convenient when you do not want to select an image whose positioning data is far from the current position even if the positioning accuracy is high, and you do not want to select an image with poor positioning accuracy even if the positioning data is close to the current position. is there. The image of the image file to be displayed may be an image in which the position of the positioning data is substantially the same as the current position of the electronic camera 1 or an image in which the position of the positioning data is within a predetermined distance from the current position of the electronic camera 1. Good. In addition, only an image with a positioning accuracy higher than a predetermined positioning accuracy may be displayed.

  With reference to the flowchart of FIG. 6, a modification of the image file image display method according to the first embodiment of the present invention will be described. The process of FIG. 6 is executed in the control circuit 101 by a program that starts when the user operates the operation buttons 103b to 103g to select the DOP thumbnail display function.

  In step S601, the GPS device 2 measures the current position. In step S602, the DOP value when the current position is measured is acquired from the GPS device 2. In step S603, an image file in which the position of the positioning data is within a predetermined distance from the current position is searched from image files stored in the memory card 150.

  In step S604, an image file having a DOP value equal to or less than the DOP value acquired from the GPS device 2 is searched from the image files searched in step S603. In step S605, for each image file searched in step S604, a value (U) obtained by multiplying the distance from the current position to the position of the positioning data by the DOP value is calculated. In step S606, a reduced image of the searched image file is created. In step S607, the reduced images of the image files are displayed side by side in the order from the image file with a small U value to the image file with a large U value.

-Second Embodiment-
Hereinafter, an electronic camera according to a second embodiment of the present invention will be described with reference to the drawings. The electronic camera 1 according to the second embodiment of the present invention displays an image on the display monitor 104 while changing the size of the image. The order of image sizes is determined based on the DOP value of the image file. The image is displayed together with a map around the position of the positioning data. Since the configuration of the electronic camera 1 of the second embodiment is not different from the configuration of the electronic camera 1 of the first embodiment, description of the configuration of the electronic camera 1 of the second embodiment is omitted.

  With reference to FIG. 7, the image display method of the image file in the 2nd Embodiment of this invention is demonstrated. FIG. 7 is a diagram for explaining a display screen of the display monitor 104 displaying an image of an image file stored in the memory card 150. As shown in FIG. 7, on the display monitor 104, images 42a to 42c of an image file whose DOP value is equal to or smaller than a predetermined value are displayed as reduced images together with a map 50A. The map 50 </ b> A is a map around the current position 51 of the electronic camera 1.

  The position of the positioning data in the image files of the images 42 a to 42 c is substantially the same position as the current position 51 of the electronic camera 1. Therefore, the map 50A is also a map around the position of the positioning data in the image files of the images 42a to 42c. Further, the sizes of the images 42a to 42c become smaller in the order from the smallest DOP value to the larger one, that is, the order from the higher positioning accuracy to the lower one. Therefore, the positioning accuracy of the largest image 42a is the highest (the DOP value is the smallest), and the positioning accuracy of the smallest image 42c is the worst (the DOP value is large).

  With reference to the flowchart of FIG. 8, an image file image display process according to the second embodiment of the present invention will be described. The processing of FIG. 8 is executed in the control circuit 101 by a program that starts when the user operates the operation buttons 103b to 103g to select the DOP thumbnail display function. The same reference numerals are assigned to the processes common to the processes in FIG. 5, and the differences from the fifth process will be mainly described.

  After step S504, the process proceeds to step S801. In step S801, the reduced image of the image file searched in step S504 is created by gradually reducing the size in the order from the smallest DOP value to the largest one. In step S802, a map around the current position is displayed on the display monitor 104 at a predetermined scale. In step S803, the reduced images are displayed away from the current position as the DOP value increases so that the images do not overlap.

According to the second embodiment described above, the following operational effects can be obtained in addition to the operational effects of the first embodiment.
(1) The image 42a (42b) of the image file with high positioning accuracy is displayed larger than the image 42b (42c) of the image file with low positioning accuracy. Thereby, an image with high positioning accuracy can be preferentially selected.

(2) The image of the image file is displayed together with a map around the position of the positioning data in the image file. Thereby, the position where the image of the image file is taken can be confirmed on the map, which is convenient.

(3) An image file having a predetermined positioning accuracy or higher is searched, and the image of the searched image file is displayed on the display monitor 104. Thereby, although it is actually an image taken at a position outside the map display range, it can be prevented from being displayed as if it was taken within the map display range due to poor positioning accuracy. .

The above second embodiment can be modified as follows.
(1) In the second embodiment described above, an image of an image file having positioning data that substantially matches the current position of the electronic camera 1 is displayed on the map. However, an image of an image file having positioning data within a predetermined distance from the current position of the electronic camera 1 may be displayed. For example, images 43a to 43c may be displayed as shown in FIG. Here, the position of the positioning data in the image 43a is denoted by reference numeral 44a, the position of the positioning data in the image 43b is denoted by reference numeral 44b, and the position of the positioning data in the image 43c is denoted by reference numeral 44c. The positions 44 a to 44 c of these positioning data are within a predetermined distance 52 from the current position 51 of the electronic camera 1.

  With reference to the flowchart of FIG. 10, a modification of the image display processing of the image file according to the second embodiment of the present invention will be described. The processing in FIG. 10 is executed in the control circuit 101 by a program that starts when the user operates the operation buttons 103b to 103g to select the DOP thumbnail display function. The processes common to the processes in FIG. 6 are denoted by the same reference numerals, and differences from the processes in FIG. 6 will be mainly described.

  After step S604, the process proceeds to step S1001. In step S1001, the reduced image of the image file searched in step S604 is created by gradually reducing the size in the order from the smallest DOP value to the largest one. In step S1002, a map around the current position is displayed on the display monitor 104 at a predetermined scale. In step S1003, a reduced image is displayed near the position of the positioning data.

(2) The size of the plurality of images displayed on the display monitor 104 together with the map is not limited to the first embodiment. For example, you may make it make the magnitude | size of the some image displayed with a map all the same. Also in this case, the position where the image of the image file is taken can be confirmed on the map, which is convenient. Further, the size of the image corresponding to the DOP value may be determined in advance, and the size of the image to be displayed may be changed according to the DOP value. It is convenient because the positioning accuracy can be recognized just by looking at the size of the image.

-Third embodiment-
Hereinafter, an electronic camera according to a third embodiment of the present invention will be described with reference to the drawings. The electronic camera 1 according to the third embodiment of the present invention determines a DOP value serving as a reference for searching for an image file to be displayed on the display monitor 104 based on the scale of the map displayed on the display monitor 104. Since the configuration of the electronic camera 1 according to the third embodiment is not different from the configuration of the electronic camera 1 according to the first embodiment, description of the configuration of the electronic camera 1 according to the third embodiment is omitted.

  With reference to FIG. 11, the image display method of the image file in the 3rd Embodiment of this invention is demonstrated. FIG. 11 is a view for explaining a display screen of the display monitor 104 displaying an image of the image file stored in the memory card 150. FIG. 11A is a diagram for explaining a display screen in which an image is displayed on a map of a predetermined scale. FIG. 11B shows the map scale in detail compared to the map of 11A. It is a figure for demonstrating the display screen which displayed the image on the map when it changes to the side.

  As shown in FIG. 11A, on the display monitor 104, images 43a to 43c of an image file having a DOP value equal to or smaller than a predetermined value are displayed as reduced images together with a map 50A. Here, the sizes of the images 43a to 43c are gradually reduced in order from the smallest DOP value to the largest one.

  As shown in FIG. 11B, when the scale of the map is changed to the detailed side, the DOP value, which is a criterion for displaying the image of the image file, is changed from a predetermined value to a smaller value. As a result, only the image 43a and the image 43b are displayed, and the image 43c with poor positioning accuracy is not displayed. The closer the scale of the map displayed on the display monitor 104 is to the detailed side, the smaller the DOP value that is a criterion for displaying the image of the image file, and the closer the scale of the map displayed on the display monitor 104 is to the wide area side, The DOP value that is a criterion for displaying the image of the image file is increased.

  With reference to the flowchart of FIG. 12, the image display processing of the image file in the 3rd Embodiment of this invention is demonstrated. The processing in FIG. 12 is executed in the control circuit 101 by a program that starts when the user operates the operation buttons 103b to 103g to select the DOP thumbnail display function. The processes common to those in FIG. 10 are denoted by the same reference numerals, and different portions from the processes in FIG. 10 will be mainly described. Here, a description will be given assuming that the user can set the scale of the map displayed on the display monitor 104 by operating the operation buttons 103b to 103g. Thereby, the user can change the scale of the map.

  After step S601, the process proceeds to step S1201. In step S1201, the scale of the map set in the electronic camera 1 is detected. In step S1202, a reference DOP value is determined from the scale of the map. Here, the reference DOP value becomes smaller as the scale of the map is closer to the detailed side, and the reference DOP value becomes larger as the scale of the map is larger. Then, the process proceeds to step S603, and the process proceeds to step S1203.

  In step S1203, an image file having a DOP value equal to or smaller than the reference DOP value is searched. Then, the process proceeds to step S1001 and proceeds to step S1204. In step S1204, the map is displayed on the display monitor 104 at the set scale. Then, the process proceeds to step S1003, and the process proceeds to step S1205. In step S1205, it is determined whether or not the DOP thumbnail display is terminated by the user's operation of the operation buttons 103b to 103g. When the DOP thumbnail display is ended, an affirmative determination is made in step S1205, and the image display process is ended. If the DOP thumbnail display has not ended, a negative determination is made in step S1205, and the process returns to step S501.

According to the third embodiment described above, the following functions and effects can be obtained in addition to the functions and effects of the first embodiment.
When the scale of the map is changed, the reference DOP value, which is a criterion for determining whether images can be displayed, is changed based on the changed map scale, and the DOP value of the image file is equal to or less than the changed reference DOP value. Is displayed with a map whose scale has been changed. As a result, the scale of the map has been changed to the detailed side, and the map display range has become narrower, so the map display is displayed even though it was actually taken at a position outside the map display range. It is possible to prevent the image from being displayed within the range.

The above third embodiment can be modified as follows.
The size of the plurality of images displayed together with the map is not limited to the third embodiment. For example, you may make it make the magnitude | size of the some image displayed with a map all the same. Further, the size of the image corresponding to the DOP value may be determined in advance, and the size of the image to be displayed may be changed according to the DOP value.

-Fourth embodiment-
Hereinafter, an electronic camera according to a fourth embodiment of the present invention will be described with reference to the drawings. In the electronic camera 1 according to the fourth embodiment of the present invention, a user can set a DOP value that is a reference for searching for an image file to be displayed. Since the configuration of the electronic camera 1 according to the fourth embodiment is not different from the configuration of the electronic camera 1 according to the first embodiment, the description of the configuration of the electronic camera 1 according to the fourth embodiment is omitted.

  With reference to FIG. 13, the image display method of the image file in the 4th Embodiment of this invention is demonstrated. FIG. 13 is a diagram for explaining a display screen of the display monitor 104 that displays an image of an image file stored in the memory card 150 on a predetermined map. On the display screen, a reference DOP value display column 60 indicating the DOP value input by the user operating the operation buttons 103b to 103g is displayed together with the map 50B and the images 43a to 43c. In the reference DOP value display field 60, a scale of the DOP value and an inverted triangle mark 61 moving on the scale are displayed. The mark 61 moves on the scale of the DOP value input by the user. Thereby, the user can confirm the DOP value inputted by the user. The sizes of the images 43a to 43c are gradually reduced in the order from the smallest DOP value to the largest one.

  FIG. 13A shows a display screen when the user inputs “3” as the DOP value. Images 43a and 43b whose DOP value of the image file is 3 or less are displayed on the display screen. FIG. 13B is a display screen when the user inputs “7” as the DOP value. In addition to the images 43a and 43b whose image file DOP value is 3 or less, an image 43c whose DOP value is greater than 3 and 7 or less is also displayed on the display screen.

  An image file image display process according to the fourth embodiment of the present invention will be described with reference to the flowchart of FIG. The processing in FIG. 14 is executed in the control circuit 101 by a program that starts when the user operates the operation buttons 103b to 103g to select the DOP thumbnail display function. The processes common to those in FIG. 12 are denoted by the same reference numerals, and portions different from the processes in FIG. 12 will be mainly described.

  In step S1401, the reference DOP value is set to 2. Then, the process proceeds to step S601 and step S603. After step S1003, the process proceeds to step S1402. In step S1402, the user operates the operation buttons 103b to 103g to input a DOP value, and determines whether or not the reference DOP value has been changed. If the reference DOP value has been changed, an affirmative determination is made in step S1402 and the process proceeds to step S1403. If the reference DOP value has not been changed, a negative determination is made in step S1402 and the process proceeds to step S1205. In step S1403, the reference DOP value is changed to the DOP value input by the user. Then, the process returns to step S601.

According to the fourth embodiment described above, the following functions and effects can be obtained in addition to the functions and effects of the first embodiment.
An image file with a positioning accuracy or higher input by the user is searched, and the image of the searched image file is displayed. As a result, the image of the positioning accuracy desired by the user can be displayed on the display monitor 104, which is convenient.

The above fourth embodiment can be modified as follows.
The size of the plurality of reduced images displayed together with the map is not limited to the third embodiment. For example, a plurality of reduced images displayed together with the map may all have the same size. Further, the size of the image corresponding to the DOP value may be determined in advance, and the size of the image to be displayed may be changed according to the DOP value.

-Fifth embodiment-
Hereinafter, an electronic camera according to a fifth embodiment of the present invention will be described with reference to the drawings. In the electronic camera 1 according to the fifth embodiment of the present invention, when one image is selected from a plurality of images displayed side by side on the display monitor 104, the position of the positioning data of the selected image is displayed. A surrounding map is displayed on the display monitor 104. In addition, the selected image is displayed on the map. Since the configuration of the electronic camera 1 of the fifth embodiment is not different from the configuration of the electronic camera 1 of the first embodiment, description of the configuration of the electronic camera 1 of the fifth embodiment is omitted.

  With reference to FIG. 15 and FIG. 16, the image display method of the image file in the 5th Embodiment of this invention is demonstrated. FIGS. 15A and 16A are diagrams for explaining a display screen on which images 41a to 41d of an image file having a DOP value equal to or smaller than a predetermined value are displayed side by side as reduced images. In FIG. 15A, the image 45a is selected by the user among the plurality of images 45a to 45d, and in FIG. 16A, the image 45c is selected from the plurality of images 45a to 45d by the user. The user can select an image by operating the operation buttons 103b to 103g.

  FIG. 15B is a diagram for explaining a display screen displayed after the image 45a is selected in FIG. A map 50B around the positioning position 46a of the selected image 45a and the selected image 45a are displayed on the display screen. The scale of the map 50B is determined based on the positioning accuracy of the positioning data of the image 45a. When the positioning accuracy is high, that is, when the DOP value is small, a detailed map is displayed, and when the positioning accuracy is poor, that is, when the DOP value is large, a wide area map is displayed.

  FIG. 16B is a diagram for explaining a display screen displayed after the image 45c is selected in FIG. On the display screen, a map 50A around the positioning position 46c of the selected image 45c and the selected image 45c are displayed. Since the positioning accuracy of the image 45c is worse than that of the image 45a, the scale of the map 50A is on the wide area side compared to the map 50B. The size of the images 45a and 45c displayed on the maps 50A and 50B is the same.

  With reference to the flowchart of FIG. 17, the image display processing of the image file in the 5th Embodiment of this invention is demonstrated. The processing in FIG. 17 is executed in the control circuit 101 by a program that starts when the user operates the operation buttons 103b to 103g to select the DOP thumbnail display function. Here, it is assumed that the user can select a desired image from images displayed side by side on the display monitor 104 by operating the operation buttons 103b to 103g.

  In step S1701, a reduced image is created from the image file stored in the memory card 150. In step S1702, the reduced images are displayed side by side on the display monitor 104. In step S1703, it is determined whether a reduced image has been selected. If a reduced image is selected, an affirmative determination is made in step S1703 and the process proceeds to step S1704. If a reduced image is not selected, step S1703 is repeated.

  In step S1704, the position and DOP value of the positioning data of the selected reduced image are detected. In step S1705, the scale of the map is determined based on the detected DOP value. As described above, when the DOP value is small, the map scale is set to the detailed side, and when the DOP value is large, the map scale is set to the wide area side. In step S1706, a map around the position of the positioning data is displayed at the determined scale. In step S1707, the reduced image selected in step S1703 is displayed on the map.

  In step S1708, it is determined whether or not an operation for returning to the previous screen has been performed by the user operating the operation buttons 103b to 103g. If an operation to return to the previous screen is performed, an affirmative determination is made in step S1708, and the process returns to step S1702. When the operation for returning to the previous screen is not performed, a negative determination is made in step S1708, and the process proceeds to step S1709. In step S1709, it is determined whether or not the DOP thumbnail display is ended by the user's operation of the operation buttons 103b to 103g. When the DOP thumbnail display is ended, an affirmative determination is made in step S1709, and the process ends. If the DOP thumbnail display has not ended, a negative determination is made in step S1709, and the process returns to step S1708.

According to the fifth embodiment described above, the following functions and effects can be obtained in addition to the functions and effects of the first embodiment.
(1) When one image is selected from the images displayed side by side on the display monitor 104, a map around the position of the positioning data in the image file of the selected image is displayed. Thereby, the position where the image of the image file is taken can be confirmed on the map, which is convenient.

(2) The scale of the map displayed when one image is selected from the images displayed side by side on the display monitor 104 is determined based on the positioning accuracy in the image file of the selected image. Thereby, although it is actually an image taken at a position outside the map display range, it can be prevented from being displayed as if it was taken within the map display range due to poor positioning accuracy. .

The above fifth embodiment can be modified as follows.
(1) When images are arranged and displayed on the display monitor 104 for selection by the user, an image of an image file having a predetermined positioning accuracy or higher may be displayed. This is because when an image with extremely poor positioning accuracy is displayed together with a map, the scale of the map determined based on the positioning accuracy is considered to be extremely wide, so the position of the positioning data is not well understood from the map.

(2) When the user selects an image displayed side by side, the selected image is displayed together with the map. However, only the map may be displayed. Also in this case, the position where the image of the image file is taken can be confirmed on the map.

(3) The size of the image corresponding to the DOP value may be determined in advance, and the size of the image displayed together with the map may be changed according to the DOP value. This is convenient because the positioning accuracy can be recognized just by looking at the size of the image. Alternatively, the order of arrangement based on the positioning accuracy of the image file may be determined to display the images side by side, and the size of the image displayed together with the map may be determined in that order.

-Modification-
(1) In the above second to fifth embodiments, an image is displayed on a map. However, the images 47a to 47e may be displayed so as to overlap the radar chart 70 as shown in FIG. Here, an image closer to the center 71 of the radar chart 70 is an image having a smaller DOP value, and an image farther from the center 71 is an image having a larger DOP value. The positioning accuracy of the images 47a to 47e can be grasped visually, which is convenient. The sizes of the images 47a to 47e may be changed according to the order of the DOP values or according to the DOP values.

  Further, when an image whose positioning data is within a predetermined distance from the current position 81 of the electronic camera 1 is displayed with a different size, the current position 81 of the electronic camera 1 is displayed as shown in FIG. It may be displayed and the map may not be displayed. Also in this case, it is possible to determine an image in which the position of the positioning data is close to or far from the current position 81 of the electronic camera 1.

(2) In the above embodiment, the DOP value when the GPS device 2 measures the current position is the DOP value that serves as a reference when searching for an image file. However, if the DOP value used as a reference when searching for an image file is a value larger than the DOP value of positioning accuracy that causes a point far away from the actual shooting point to be mistakenly recognized as a shooting point. The present invention is not limited to the embodiment.

(3) A numerical value for determining whether or not to display an image is not limited to a DOP value as long as the numerical value can represent positioning accuracy.

(4) In the above embodiment, the GPS device 2 of the electronic camera 1 is attached. However, the GPS device 2 may be built in the electronic camera 1.

(5) The present invention is not limited to the electronic camera 1 provided with the display monitor 104 as long as it is an image display device. For example, a mobile phone having a GPS function may be used.

  It is also possible to combine one or more of the above embodiments and modifications. It is possible to combine the modified examples in any way.

  The above description is merely an example, and the present invention is not limited to the configuration of the above embodiment.

1 is an external view of an electronic camera according to a first embodiment of the present invention. It is a block diagram explaining the structure of the electronic camera in the 1st Embodiment of this invention. It is a figure for demonstrating the structure of an image file. It is a figure for demonstrating the image display method of the image file in the 1st Embodiment of this invention. It is a flowchart for demonstrating the image display process of the image file in the 1st Embodiment of this invention. It is a flowchart for demonstrating the modification of the image display method of the image file in the 1st Embodiment of this invention. It is a figure for demonstrating the image display method of the image file in the 2nd Embodiment of this invention. It is a flowchart for demonstrating the image display process of the image file in the 2nd Embodiment of this invention. It is a figure for demonstrating the modification of the image display method of the image file in the 2nd Embodiment of this invention. It is a flowchart for demonstrating the modification of the image display process of the image file in the 2nd Embodiment of this invention. It is a figure for demonstrating the image display method of the image file in the 3rd Embodiment of this invention. It is a flowchart explaining the image display process of the image file in the 3rd Embodiment of this invention. It is a figure for demonstrating the image display method of the image file in the 4th Embodiment of this invention. It is a flowchart for demonstrating the image display process of the image file in the 4th Embodiment of this invention. It is a figure for demonstrating the image display method of the image file in the 5th Embodiment of this invention. It is a figure for demonstrating the image display method of the image file in the 5th Embodiment of this invention. It is a flowchart for demonstrating the image display process of the image file in the 5th Embodiment of this invention. It is a figure for demonstrating the modification of the image display method of the image file in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic camera 2 GPS apparatus 41a-41d, 42a-42c, 43a-43c, 45a-45d Image 47a-47e, 48a-48e Image 44a-44c, 43a-43c, 46a, 46c Positioning data position 50A, 50B Map 51 Current position 104 of electronic camera Display monitor

Claims (11)

Image file search means for searching for an image file having a predetermined positioning accuracy or higher from a plurality of image files having positioning data and positioning accuracy information in the positioning data;
Image file display control means for displaying an image of the image file searched by the image file search means on a display ;
A current position detecting means for detecting a current position of the image display device,
The image file search means is image data in which a distance from the current position to the position of the positioning data is within a predetermined distance, and searches for an image file having a predetermined positioning accuracy or higher.
The image file display control means displays the searched image files side by side based on the distance from the current position to the position of positioning data and the positioning accuracy. The image display device according to claim 1,
The image file display control means displays the images of the image file side by side in accordance with a value obtained by multiplying the distance from the current position to the position of the positioning data by a value representing the positioning accuracy. apparatus. The image display device according to claim 1 or 2 ,
The image file display control means displays an image of an image file with high positioning accuracy larger than an image of an image file with low positioning accuracy. The image display device according to claim 1 or 2 ,
The image file search means searches the image file having positioning data that matches the current position detected by the current position detection means or positioning data within a predetermined distance from the current position from the plurality of image files. An image display apparatus, wherein an image file having a predetermined positioning accuracy or higher is searched from the searched image files. The image display device according to any one of claims 1 to 4 ,
The image file display control means displays an image of the image file together with a map around the position of positioning data in the image file. The image display device according to claim 5 ,
Comprising map scale changing means for changing the scale of the map;
When the map scale is changed by the map scale changing means, the image file search means changes the predetermined positioning accuracy based on the changed map scale, and searches.
The image file display control means displays the image of the image file searched by the image file search means together with the map whose scale has been changed by the map scale change means. In the image display device according to any one of claims 1 to 6 ,
The image file display control means displays an image of the image file together with a radar chart. The image display device according to any one of claims 1 to 4 ,
Image input means for inputting an image selected from the images displayed by the image file display control means;
An image display device comprising: map display control means for displaying a map around the position of positioning data in an image file of an image input by the image input means. The image display device according to claim 8 ,
The map display control means determines the scale of the map to be displayed based on the positioning accuracy in the image file of the image input by the image input means. The image display device according to any one of claims 1 to 9 ,
Positioning accuracy input means for inputting the positioning accuracy,
The image display device is characterized in that the image file search unit searches the positioning accuracy input by the measurement accuracy input unit as the predetermined measurement accuracy. Electronic camera comprising the image display apparatus according to any one of claims 1 to 10.

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