FR2902557A1 - METHOD AND SYSTEM FOR PROCESSING A TWO-DIMENSIONAL IMAGE TO PERMIT VISUALIZATION OF SAID IMAGE INTO THREE IMAGES - Google Patents

Abstract

A method of processing a two-dimensional image to allow viewing of this three-dimensional processed image by means of a display device, such as colored filter glasses, comprising the following steps: - displaying said image, on display means, such as a computer screen, said image defining an image plane, - selecting at least a portion of the displayed image, - projecting said at least one selected image portion forwardly and / or rearwardly with respect to said image plane, and mark said at least one image part projected by color markings, in particular color edges.

Description

The present invention relates to a method and a treatment system

  a two-dimensional image to allow viewing of this image processed in three dimensions by means of a display device.

  A known method for producing three-dimensional visible images with specific glasses is to photograph or film a subject using a specific apparatus, such as a camera or a dual lens camera. Such a double-lens apparatus then makes it possible to collect two images, called stereoscopic images, of the subject photographed / filmed. These stereoscopic images correspond to two perfectly identical images that are laterally offset relative to each other by a given distance, corresponding to the ocular distance. The subject initially observed thus appears with the naked eye in double form with a phantom effect. In order to correctly observe this image, a process commonly known as anaglyph is used. This method uses a coloring of the image which makes it possible, with the aid of a suitable visualization device, having a complementary coloration, to observe said stereoscopic images. Indeed, through such a display device, the stereoscopic images are merged and then appear to the observer as a single image in three dimensions. Such a method is for example disclosed in US 6,687,003. A disadvantage of this method is that the lateral deviation created between the stereoscopic images causes a partial superposition of said subject to be observed in three dimensions. As a result, this observed subject is completely denatured and appears to the naked eye in the form of a very fuzzy image that can not be observed / identified without the display device. In addition, another disadvantage is that the specific dual-purpose equipment required for the production of stereoscopic images is very bulky and therefore very bulky. In addition, this apparatus is very sophisticated and therefore very expensive. A resulting photograph or film is therefore also very expensive. Moreover, a method of producing three-dimensional images as known from the prior art which uses a specific apparatus as previously described prohibits any possibility of creating three-dimensional visualizable images from pre-existing images. In other words, such a method does not make it possible to produce three-dimensional images from photographs taken using a conventional camera (for a single lens), whether it be film or digital, or from any graphic illustrations, for example by hand or computer. Accordingly, it is an object of the present invention to provide a system and method for processing a two-dimensional image to enable visualization of this three-dimensional processed image that does not reproduce the aforementioned drawbacks.

  In particular, the present invention aims to provide a system and a method for obtaining a two-dimensional processed image viewable in three dimensions both clear and faithful to the subject initially observed, with or without specific display device. It is another object of the present invention to provide a system and method for processing three-dimensional viewable images that are simple, inexpensive and easy to use. An object of the present invention is further to provide a system and method for creating three-dimensional viewable images from any pre-existing two-dimensional images.

  The subject of the present invention is therefore a method for processing an image in two dimensions so as to allow this image processed in three dimensions to be viewed by means of a display device, such as colored filter glasses, comprising the following steps: displaying said image on display means, such as a computer screen, said image defining an image plane, selecting at least a portion of the displayed image, projecting said at least one selected image portion forwards and / or backwards from said image plane, and marking said at least one projected image portion by color markings, in particular colored edges. Advantageously, said step of selecting comprises detouring said at least one selected image portion. Advantageously, each projected image portion defines a respective projected image plane, offset from said image plane along a projection axis, preferably perpendicular to said image plane. Advantageously, said method comprises repeating the steps of selecting, detouring and projecting, this repetition being done on the image plane and / or on a projected image plane. Advantageously, the offset distance of each image plane projected with respect to the image plane is adjustable. Advantageously, in order to adjust the offsets of the projected image planes, the image is turned on itself so as to make the projection axis appear on the display means, the different planes being able to be displaced on this projection axis.

  Advantageously, said color markings are yellow and blue. Advantageously, the dimensions of said color markings are defined according to the desired three-dimensional viewing perspective.

  The present invention further relates to a system for processing a two-dimensional image so as to allow this three-dimensional image to be viewed by means of a display device, such as colored filter glasses, comprising means for display for displaying said images, such as a computer screen, said image defining an image plane, projection means for projecting said at least one selected image portion forward and / or to rearward with respect to said image plane, and marking means for marking said at least one image portion projected by color markings, in particular color edges. Advantageously, said selection means comprise clipping means for cutting off said at least one selected image portion. Advantageously, each projected image portion defines a respective projected image plane, offset from said image plane along a projection axis, preferably perpendicular to said image plane. Advantageously, said system further comprises means for rotating the processed image to rotate said image so as to show on the display means said projection axis, as well as the image plane and said at least one plane. projected image. Advantageously, said system further comprises adjustment means for adjusting on said projection axis the offset distance between the image plane and each projected image plane. Advantageously, said marking means are controlled by said adjustment means. Advantageously, said system comprises software adapted to manage the cooperation of the various means of the system. Advantageously, said two-dimensional image to be processed is a conventional photo of any type, in particular a scanned silver photograph or a conventional digital photograph, produced by a conventional film or digital camera. Advantageously, said treated two-dimensional image is altered in a limited manner by the processing, said processed image being in particular substantially devoid of phantom effect, so that the image processed appears substantially sharp and faithful to the original image at the end of the image. the user when looking at it without the viewing device. Advantageously, said device comprises two different colored filters for each eye of the user.

  Advantageously, one filter is a blue color filter and the other filter is a yellow color filter. The invention will now be further described with reference to the accompanying drawings given as non-limiting examples, and in which: FIG. 1 shows an image processed according to the prior art; Figure 2 shows an image processed according to the invention; Figure 3 schematically shows the different image planes projected with respect to the image plane, along the projection axis; and Figure 4 shows a block diagram of the invention according to an advantageous embodiment.

  The present invention applies to any two-dimensional image. Examples of two-dimensional images are, for example, conventional photographs of any type, in particular scanned photographic photographs or digital photographs, made using a conventional camera, that is to say single-lens, or still graphic illustrations made manually or by computer. The present invention makes it possible to process this image in two dimensions so as to allow this three-dimensional image to be viewed through an appropriate display device. According to the invention, this processing system comprises means for displaying said image, means for selecting at least part of said displayed image, means for projecting forward and / or backward of said at least one selected image portion, and marking means or coloring means of said at least one projected image portion.

  The means for displaying said two-dimensional image preferably comprise a computer screen. Said image to be processed, in the case of a silver photograph or any graphic representation, is then scanned so as to reproduce said image on the computer screen for later processing this image. In the case of a digital photograph, this image can be directly displayed on the computer screen. The selection, projection and marking means are preferably managed by software. The selection means allow the user to select at least a portion of said image displayed on the computer screen. In other words, this selection makes it possible to isolate at least a part of said image so as to specifically work on this part of the image. Advantageously, these selection means comprise clipping means which make it possible to cut off said at least one selected image part. Thus, each selected image portion can be processed independently of each other. The projection means then make it possible to project said at least one selected image portion forwards and / or backwards with respect to the image plane P defined by the two-dimensional original image. Thus, such projection means make it possible to create different projected image planes Pi, offset with respect to the image plane P and which can respectively be displaced along a projection axis Z, preferably perpendicular to the image plane P. The marking means make it possible to provide said at least one projected image part with markings, in particular colored edges. Such marking means advantageously form coloring lines of two different colors, for example yellow and blue, which advantageously follow at least partially the contour of the projected image portion. The visualization of the three-dimensional image then makes use of anaglyph processes and thus the implementation of an appropriate visualization device, such as colored filter glasses, for example with a blue color filter. and a yellow filter. The choice of color filters is of course adapted to the choice of colors used by the marking means.

  Advantageously, the original image and / or a selected image portion can undergo several selection and projection steps in order to confer the desired relief effect. In other words, this repetition of the selection and projection steps can be done on the image plane P and / or on a projected image plane Pi. Advantageously, the offset between each projected image plane Pi with respect to the plane P is adjustable. In order to facilitate the creation of the three-dimensional image, the image displayed on the computer screen can be turned on itself to reveal the projection axis Z, as shown in FIG. The user can then manually move the different image planes projected on this axis with respect to each other and with respect to the image plane P. The example of FIG. 3 shows an image plane P, two planes of projected images P1 and P2 which are projected towards the rear with respect to the image plane P and three projected image planes P3, P4 and P5 projected forwardly with respect to the image plane P. Of course, any configuration of the projected planes is conceivable, for example with all the projected planes Pi projected forwardly with respect to the image plane P. Preferably, the marking means are controlled by the adjustment means. In this case, the software automatically controls said marking means according to the shifts chosen by the user. An advantage of the present invention is that the dimensions of the color markings are defined as a function of the offsets created between the different image planes and thus as a function of the desired three-dimensional viewing perspective. Alternatively, these marking means can also be manually controlled by the user.

  As can be seen in FIG. 2, the system and the method according to the invention result in a two-dimensional image, observable in three dimensions by means of an appropriate visualization device, and which is not or very little altered by the treatment. of the invention, so that it remains watchable even without a display device. In particular, the processed image does not appear in duplicate as is the case with the methods known from the prior art, an example of which is shown in FIG. 1. The image processed according to the invention is in particular substantially devoid of ghost effect. In other words, the treated two-dimensional image appears substantially clear and presents colors that are faithful to the original image even when the person observing this image does so in the absence of a display device. The present invention thus makes it possible to create a three-dimensional image from any pre-existing images, without disturbingly denaturing the original image and without using expensive and cumbersome apparatus for producing the image and / or for producing the treatment. The present invention has been described with reference to an advantageous embodiment thereof, but it is understood that any modification may be made by a person skilled in the art without departing from the scope of the present invention, defined by the appended claims.

Claims (20)

claims   1. A method for processing a two-dimensional image to enable this three-dimensional processed image to be viewed by means of a display device, such as colored filter glasses, characterized in that it comprises the steps following: - displaying said image on display means, such as a computer screen, said image defining an image plane (P), - selecting at least a portion of the displayed image, - projecting said minus one image portion selected forwards and / or backwards from said image plane, and - marking said at least one projected image part by color markings, in particular color edges.   The method of claim 1, wherein said step of selecting comprises detouring said at least one selected image portion.   The method of claim 1 or 2, wherein each projected image portion defines a respective projected image plane (Pi) offset from said image plane (P) along a projection axis (Z). preferably perpendicular to said image plane.   4. A method according to any one of the preceding claims, comprising repeating the steps of selecting and projecting, this repetition being done on the image plane (P) and / or on a projected image plane (Pi). . 7   The method of claim 3 or 4, wherein the offset distance of each projected image plane (Pi) from the image plane (P) is adjustable.   6. A method according to claim 5, wherein for adjusting the offsets of the projected image planes (Pi), the image is turned on itself to show the projection axis (Z) on the means of display, the different planes can be moved on this projection axis (Z).   7. A process according to any one of the preceding claims wherein said color markings are yellow and blue in color.   The method of any of the preceding claims, wherein the dimensions of said color markings are set according to the desired three-dimensional viewing perspective.   9. A method according to any one of the preceding claims, wherein, after treatment, said processed two-dimensional image is substantially devoid of ghost effect, so that the processed image appears substantially sharp and true to the image of the image. origin to the user when looking at it without the display device.   10. A system for processing an image in two dimensions to allow a display of this image processed in three dimensions by means of a display device, such as colored filter glasses, characterized in that it comprises: display means for displaying said images, such as a computer screen, said image defining an image plane (P), means for selecting at least part of the displayed image, projection means for projecting said at least one selected image portion forwards and / or backwards with respect to said image plane, and marking means for marking said at least one projected image portion by color markings, including colored edges.   The system of claim 10, wherein said selecting means includes clipping means for clipping said at least one selected image portion.   The system of claim 10 or 11, wherein each projected image portion defines a respective projected image plane (Pi) offset from said image plane (P) along a projection axis (Z). preferably perpendicular to said image plane (P).   13. System according to any one of claims 10 to 12, further comprising means for rotating the processed image to rotate said image so as to show on the display means said projection axis (Z) , as well as the image plane (P) and said at least one projected image plane (Pi).   The system of claim 13, further comprising setting means for adjusting on said projection axis (Z) the offset distance between the image plane (P) and each projected image plane (Pi).   15. The system of claim 14, wherein said marking means are controlled by said adjusting means.   16.- System according to any one of claims 10 to 15, comprising software adapted to manage the cooperation of the various means of the system.   17.- System according to any one of claims 10 to 16, wherein said two-dimensional image to be processed is a conventional photo of any type, including a scanned silver photograph or a conventional digital photo, made by a film or digital camera classic. io   18.- Display device for displaying in three dimensions a two-dimensional image processed by the method according to any one of claims 1 to 9 and / or the system according to any one of claims 10 to 17, characterized in that said device has two different color filters for each eye of the user.   19.- Device according to claim 18, wherein a filter is a blue color filter and the other filter is a yellow filter. 20 * * *