US-20260127728-A1 - DISPLAY TERMINAL, DISPLAY METHOD, AND RECORDING MEDIUM

US20260127728A1US 20260127728 A1US20260127728 A1US 20260127728A1US-20260127728-A1

Abstract

A display terminal, a displaying method, and a program stored in a recording medium, each of which: acquires a wide-view image captured by an image capturing apparatus and having a wide angle of view; displays, on a display, a predetermined-area image representing a predetermined area of the wide-view image; and transmits an image capturing parameter to be received by the image capturing apparatus, the image capturing parameter being determined such that the quality of the predetermined-area image being displayed is adequate.

Inventors

Takeshi Homma

Assignees

RICOH COMPANY, LTD.

Dates

Publication Date: 20260507
Application Date: 20251229
Priority Date: 20220317

Claims (20)

1 . A display terminal comprising circuitry configured to: acquire a wide-view image captured by an image capturing apparatus and having a wide angle of view; display, on a display, a predetermined-area image representing a predetermined area of the wide-view image; and transmit an image capturing parameter to be received by the image capturing apparatus to cause the image capturing apparatus to adjust a quality of the predetermined-area image in accordance with the image capturing parameter, in response to switching to an automatic setting mode on the display terminal on which a setting mode is switchable between a manual setting mode and the automatic setting mode, the circuitry is configured to notify the image capturing apparatus that the mode is the automatic setting mode, and in the case that the mode is the automatic setting mode, the circuitry is configured to automatically execute determination of the quality of the predetermined-area image, generation of the image capturing parameter, and transfer of the image capturing parameter.
2 . The display terminal according to claim 1 , wherein the image capturing parameter adjusts at least one of exposure, white balance, International Standards Organization (ISO) sensitivity, shutter speed, focus, noise reduction, dynamic range (DR) correction, or high dynamic range (HDR) rendering, of the image capturing apparatus.
3 . The display terminal according to claim 1 , wherein the circuitry is configured to: determine whether the quality of the predetermined-area image being displayed is adequate image quality; generate the image capturing parameter for making the quality of the predetermined-area image adequate based on a determination that the quality of the predetermined-area image being displayed is not adequate; and transmit the generated image capturing parameter.
4 . A system comprising: the display terminal according to claim 1 ; and an image capturing apparatus configured to capture the wide-view image for display at the display terminal, the image capturing apparatus including circuitry configured to: receive the image capturing parameter; adjust quality of the wide-view image using the image capturing parameter; and transmit the wide-view image having the adjusted quality for display at the display terminal.
5 . The system of claim 4 , further comprising: an information processing server configured to relay communication between the image capturing apparatus and the display terminal.
6 . The system of claim 5 , wherein the information processing server includes circuitry configured to: receive a request for adjusting an image capturing function of the image capturing apparatus from the display terminal, the request including the image capturing parameter; and transmit the request for adjusting to the image capturing apparatus.
7 . A displaying method comprising: acquiring a wide-view image captured by an image capturing apparatus and having a wide angle of view; displaying, on a display, a predetermined-area image representing a predetermined area of the wide-view image; and transmitting an image capturing parameter to be received by the image capturing apparatus to cause the image capturing apparatus to adjust the quality of the predetermined-area image in accordance with the image capturing parameter, in response to switching to an automatic setting mode on the display terminal on which a setting mode is switchable between a manual setting mode and the automatic setting mode, notifying the image capturing apparatus that the mode is the automatic setting mode, and in the case that the mode is the automatic setting mode, automatically executing determination of the quality of the predetermined-area image, the generation of the image capturing parameter, and transfer of the image capturing parameter.
8 . A non-transitory recording medium storing a plurality of instructions which, when executed by one or more processors, causes the processors to perform a display method comprising: acquiring a wide-view image captured by an image capturing apparatus and having a wide angle of view; displaying, on a display, a predetermined-area image representing a predetermined area of the wide-view image; and transmitting an image capturing parameter to be received by the image capturing apparatus to cause the image capturing apparatus to adjust the quality of the predetermined-area image in accordance with the image capturing parameter, in response to switching to an automatic setting mode on the display terminal on which a setting mode is switchable between a manual setting mode and the automatic setting mode, notifying the image capturing apparatus that the mode is the automatic setting mode, and in the case that the mode is the automatic setting mode, automatically executing determination of the quality of the predetermined-area image, the generation of the image capturing parameter, and transfer of the image capturing parameter.
9 . The non-transitory recording medium according to claim 8 , wherein the image capturing parameter adjusts at least one of exposure, white balance, International Standards Organization (ISO) sensitivity, shutter speed, focus, noise reduction, dynamic range (DR) correction, or high dynamic range (HDR) rendering, of the image capturing apparatus.
10 . The non-transitory recording medium according to claim 8 , wherein the method further comprises: determining whether the quality of the predetermined-area image being displayed is adequate image quality; generating the image capturing parameter for making the quality of the predetermined-area image adequate based on a determination that the quality of the predetermined-area image being displayed is not adequate; and transmitting the generated image capturing parameter.
11 . The non-transitory recording medium according to claim 8 , wherein the adequate image quality is a predetermined image quality.
12 . The non-transitory recording medium according to claim 8 , wherein the method further comprises: adjusting a quality of the wide-view image using the image capturing parameter; and transmitting the wide-view image having the adjusted quality for display at the display terminal.
13 . The non-transitory recording medium according to claim 8 , wherein in the manual setting mode, a user manually performs settings the image capturing parameter and transmitting the set image capturing parameter.
14 . The display terminal according to claim 3 , wherein the adequate image quality is a predetermined image quality.
15 . The display terminal according to claim 1 , wherein in the manual setting mode, a user manually performs settings the image capturing parameter and transmitting the set image capturing parameter.
16 . The displaying method according to claim 7 , wherein the image capturing parameter adjusts at least one of exposure, white balance, International Standards Organization (ISO) sensitivity, shutter speed, focus, noise reduction, dynamic range (DR) correction, or high dynamic range (HDR) rendering, of the image capturing apparatus.
17 . The displaying method according to claim 7 , further comprising: determining whether the quality of the predetermined-area image being displayed is adequate image quality; generating the image capturing parameter for making the quality of the predetermined-area image adequate based on a determination that the quality of the predetermined-area image being displayed is not adequate; and transmitting the generated image capturing parameter.
18 . The displaying method according to claim 17 , wherein the adequate image quality is a predetermined image quality.
19 . The displaying method according to claim 7 , further comprising adjusting a quality of the wide-view image using the image capturing parameter, and transmitting the wide-view image having the adjusted quality for display at the display terminal.
20 . The displaying method according to claim 7 , wherein in the manual setting mode includes a user manually performing settings of the image capturing parameter and transmitting the set image capturing parameter.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This patent application is a Continuation Application of U.S. application Ser. No. 18/117,475, filed on Mar. 6, 2023, which is based on and claims priority pursuant to 35 U.S.C. § 119(a) to Japanese Patent Application No. 2022-043090, filed on Mar. 17, 2022, in the Japan Patent Office, the entire disclosure of each are hereby incorporated by reference herein. BACKGROUND Technical Field The present disclosure relates to a display terminal, a display method, and a recording medium. Related Art A wide-field-of-view image having a wide viewing angle and captured in a wide imaging range as an imaging range including even an area that is difficult for a normal angle of view to cover is known. The wide-field-of-view image is hereinafter referred to as a “wide-view image”. Examples of the wide-view image include a 360-degree image that is a captured image of an entire 360-degree view. The 360-degree image is also referred to as a spherical image, an omnidirectional image, or an “all-around” image. The wide-view image is generated by capturing an image of an object or surroundings such as scenery with a spherical imaging camera. The wide-view image looks entirely distorted to a user who views the wide-view image. A predetermined area, which is a portion of the wide-view image, may be displayed on a display for viewing. SUMMARY Example embodiments include a display terminal, a displaying method, and a program stored in a recording medium, each of which: acquires a wide-view image captured by an image capturing apparatus and having a wide angle of view; displays, on a display, a predetermined-area image representing a predetermined area of the wide-view image; and transmits an image capturing parameter to be received by the image capturing apparatus, the image capturing parameter being determined such that the quality of the predetermined-area image being displayed is adequate. BRIEF DESCRIPTION OF THE DRAWINGS A more complete appreciation of embodiments of the present disclosure and many of the attendant advantages and features thereof can be readily obtained and understood from the following detailed description with reference to the accompanying drawings, wherein: FIG. 1 is a diagram illustrating an example of remote communication using a wide-view image; FIG. 2 is a diagram illustrating an example schematic configuration of a communication system; FIG. 3 is a diagram illustrating an example hardware configuration of an image capturing apparatus; FIG. 4 is a diagram illustrating an example hardware configuration of a communication terminal and an information processing system; FIGS. 5A, 5B, and 5C are a left side view, a front view, and a plan view of the image capturing apparatus according to an embodiment of the present disclosure, respectively; FIG. 6 is an illustration for explaining how a user uses the image capturing apparatus, according to an embodiment of the present disclosure; FIGS. 7A, 7B, and 7C are views illustrating a hemispherical image (front side) captured by the image capturing apparatus, a hemispherical image (back side) captured by the image capturing apparatus, and an image in equirectangular projection, respectively, according to an embodiment of the present disclosure; FIG. 8A is a conceptual diagram illustrating an example of how the image in equirectangular projection is mapped to a surface of a sphere; FIG. 8B is a view illustrating a spherical image, according to an embodiment of the present disclosure; FIG. 9 is a view illustrating positions of a virtual camera and a predetermined area in a case where the spherical image is of a three-dimensional sphere according to an embodiment of the present disclosure; FIG. 10A is a perspective view of the virtual camera and the predetermined area illustrated in FIG. 9 according to an embodiment of the present disclosure; FIG. 10B is a view illustrating a predetermined-area image obtained in the state illustrated in FIG. 10A and displayed on a display according to an embodiment of the present disclosure; FIG. 10C is a view of a predetermined area obtained by changing the point of view of the virtual camera illustrated in FIG. 10A according to an embodiment of the present disclosure; FIG. 10D is a view illustrating a predetermined-area image obtained in the state illustrated in FIG. 10C and displayed on the display according to an embodiment of the present disclosure; FIG. 11 is a view illustrating a relationship between predetermined-area information and an image of the predetermined area according to an embodiment of the present disclosure; FIG. 12 is a view illustrating a point in a three-dimensional Euclidean space defined in spherical coordinates, according to an embodiment of the present disclosure; FIG. 13 is a diagram illustrating an example functional configuration of the communication system; FIGS. 14A and 14B are tables illustrating an example of image management information stored in an image managem