Search

EP-4740451-A1 - METHOD AND DEVICE FOR THE PERSONALIZED DISPLAYING OF A SCENE ON A DISPLAY MEDIUM ON THE BASIS OF ONE OR MORE IMAGES OF SAID SCENE

EP4740451A1EP 4740451 A1EP4740451 A1EP 4740451A1EP-4740451-A1

Abstract

The invention relates to a method (100) for representing a scene on the basis of at least one image of said scene, the method (100) comprising at least one iteration of a displaying phase (102) comprising the following steps: - displaying (104) an image of the scene (IC), referred to as current image, on a first display medium, - detecting (106), a position, referred to as target position, of interest to a user in the current image (IC), - obtaining (108) an image (IN), referred to as new image, sharply displaying the scene in the target position, - displaying (110) the new image on at least a second display medium viewed by at least a second user. The invention also relates to a computer program and a system implementing such a method.

Inventors

  • LEGROS, ERIC
  • PETITGRAND, Sylvain
  • LUONG, BRUNO

Assignees

  • Fogale Optique

Dates

Publication Date
20260513
Application Date
20230708

Claims (15)

  1. 1. Method (100; 500; 600; 700) of representing a scene from at least one image of said scene, said method (100; 500; 600; 700) comprising at least one iteration of a display phase (102) comprising the following steps: - display (104), on a first display medium (802), of an image of the scene (IC), called the current image; - detection (106), on said current image (IC), of a position, called target position in which a first user (804), called speaker, is interested; - obtaining (108) an image (IN), called a new image, clearly displaying said scene at said target position; and - displaying (110) said new image on at least one second display medium (810) observed by at least one second user (812), called participant.
  2. 2. Method (100; 500; 600; 700) according to the preceding claim, characterized in that it comprises a step (112) of displaying the new image (IN) on the first display medium (802).
  3. 3. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the step (108) of obtaining the new image (IN) is carried out on the speaker side (804), said new image being transmitted to the participant (812).
  4. 4. Method (100; 500; 600; 700) according to any one of claims 1 or 2, characterized in that the step (108) of obtaining the new image (IN) is carried out on the side of the participant (812), said method (100; 500; 600; 700) comprising a transmission of the target position to the participant (812).
  5. 5. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the step (108) of obtaining the new image comprises an on-the-fly generation of the new image, by calculation.
  6. 6. Method (100;500;600;700) according to the preceding claim, characterized in that the source image is an image (INP), previously obtained, and representing the scene clearly in all areas.
  7. 7. Method (100; 500; 600; 700) according to any one of claims 1 to 3, characterized in that the step (108) of obtaining the new image (IN) comprises a step (206) of selecting the new image (IN) in a stack of images (PIL) of said scene, each having a different sharpness zone.
  8. 8. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the display phase (102) further comprises, after identification of the target position, a step of identifying an object located at the target position, the obtaining of the new image being carried out as a function of said object.
  9. 9. Method according to any one of the preceding claims, characterized in that the display phase (102) further comprises a step of identifying a zone, called target, of the scene comprising the target position, the obtaining of the new image being carried out as a function of said target zone.
  10. 10. Method according to any one of the preceding claims, characterized in that the display phase (102) comprises a step of determining depth data of the scene at said target position, the new image being obtained as a function of said depth data.
  11. 11. Method (100;500;600;700) according to any one of the preceding claims, characterized in that the target position is entered manually by the speaker (804).
  12. 12. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the step (106) of detecting the target position comprises a detection, by at least one sensor, of a position targeted by a part of the body of the speaker (804).
  13. 13. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the display phase (102) is repeated for several images, or series of images, each captured at a different time, for example forming part of a video.
  14. 14. Computer program comprising executable instructions which, when executed by a computing device, implement all the steps of the method (100; 500; 600; 700) according to any one of the preceding claims.
  15. 15. System (800;900) comprising: - a first display support (802), - at least one second display medium (810), and - at least one calculation unit; configured to implement the method (100; 500; 600; 700) according to any one of claims 1 to 13.

Description

DESCRIPTION Title: Method and device for personalized display of a scene from image(s) of said scene, on a display medium [0001] The present invention relates to a method for representing a scene allowing a personalized display of a scene on a display medium. It also relates to a computer program and a system implementing such a method. [0002] The field of the invention is the field of displaying a digital image on a display medium, such as a display screen or a projection surface. State of the art [0003] When the human eye scans a scene, it observes said scene according to different focalizations to perceive the entirety of a scene. The focalizations used to scan a scene depend directly on the depth of the objects in said scene. Generally, to observe a part of a scene, the human eye adapts the focalization to the depth of the scene in said part, to obtain a clear perception of the scene in said area. [0004] However, the methods for representing a scene currently known perform the display of an image of said scene according to a single focus, namely the focus used to capture said image. When the scene comprises parts located at different depths, the focus corresponds to one of said depths so that only one of the parts of the scene is clear in the displayed image. [0005] Such a display gives a very limited and very static representation of the scene. It does not adapt to the interest that a user may have in this or that part of the scene represented on a display medium. In the case of a speaker observing the scene, it does not allow the display of said scene to the participants, depending on the area the speaker is interested in. [0006] An aim of the present invention is to remedy at least one of the drawbacks of the state of the art. [0007] Another aim of the invention is to propose a solution allowing a representation of a scene on a display medium which is more suited to a person observing said scene on said medium. Disclosure of the invention [0008] The invention proposes to achieve at least one of the aforementioned aims by a method of representing a scene from at least one image of said scene, said method comprising at least one iteration of a display phase comprising the following steps: - display, on a first display medium, of an image of the scene, called the current image; - detection, on said current image, of a position, called target position in which a first user, called speaker, is interested; - obtaining an image, called a new image, clearly displaying said scene at said target position; and - displaying said new image on at least one second display medium observed by at least one second user, called a participant. [0009] Thus, in a conventional manner, the method proposes to display an image, called the current image, of the scene on a first display medium. This current image comprises a sharpness zone corresponding to a given depth of field: all the other zones of the current image are blurred. The method according to the invention also proposes to determine a target position in which a speaker, observing the current image displayed on the first display medium, is interested. Then, this target position is used to obtain another image of the scene in which the target position is in a sharp zone, this new image is in a way an adjusted or refocused image. This new image is then displayed on at least one second medium observed by one or more participants, different from the speaker. [OO1O] Thus, the display of the scene for each participant is personalized and adapts to the position in which the speaker is interested, so that the area observed by the speaker is always displayed clearly for the participant. In other words, according to a non-limiting exemplary embodiment, the clear area of the scene displayed on the second display medium for the participant follows the gaze of the speaker. Unlike the prior art, the focusing distance and optionally the depth of field of an image of a scene is not static, adapts and adjusts according to the speaker. [0011] Thus, the or each speaker can follow the gaze of the speaker who navigates in the scene. [0012] According to the invention, each display medium can be any type of display medium. [0013] For example, the first display medium, and/or the second display medium, may be an electronic display screen. [0014] For example, the first display medium, and/or the second display medium, may be a surface onto which an image of the scene is projected, such as for example a display surface associated with a projector, etc. [0015] The first display medium, and/or the second display medium, may be a display medium equipping a device participating in carrying out the display phase, such as: - a display screen equipping said device; or - a projection surface equipping said device. [0016] The display medium may be a medium independent of the device participating in carrying out the display phase, for example in the context of a projector projecting the images onto