Method and device for inserting a 3D graphics animation in a 3D stereo content
View Patent ↗The invention concerns a method and a device for inserting 3D graphic animation in a 3D image, each 3D graphic element of the graphic animation being defined in size and in depth for the insertion in a determined insertion zone of said 3D image. The method comprises the step of determining for the graphic element to be inserted a depth range with a maximum allowed depth value, replacing the out of range depth values by the maximum allowed depth value when depth values of the graphic element are out of range and compensating the depth difference between the depth values of the graphic element and the maximal allowed depth value in reducing the graphic element in size proportionally to the reduction of depth for the graphic element.
1. A method of inserting a graphic element in a 3D image, executed by an electronic device associated with a display device for displaying the 3D image, the method comprising:
Obtaining for the graphic element to be inserted, at least a length L of said graphic element, a depth z associated with said graphic element for the insertion and an insertion zone in said 3D image;
Determining for the graphic element to be inserted a maximal allowed depth value z max corresponding to the minimum depth value of the image in the insertion zone so that the graphic element is not overlapped by the corresponding part of the 3D image in said insertion zone;
When a depth value of the graphic element to be inserted is superior to the maximal allowed depth value, keeping the depth value of the graphic element by the maximal allowed depth value;
compensating the depth difference between the depth value of the graphic element to be inserted which is superior to the maximal allowed depth value and the maximal allowed depth value in reducing the graphic element in size proportionally to the reduction of depth for the graphic element in such a way that said graphic element, positioned at the maximal allowed depth value z max , has at least a length value I equal to (z max *L)/z; and
displaying the 3D image with the inserted graphic element on the display device.
2. The method of claim 1 , further comprising determining a bounding box around the graphic element so that at least a length and a depth value of the bounding box replace said at least the length L and depth z associated with the graphic element.
3. The method of claim 2 , wherein the graphic element to be inserted further comprises a width W, and wherein said reducing further comprises a size reduction such that said graphic element, positioned at the maximal allowed depth value zmaxc has a width value w equal to (zmax*W)/z.
4. The method of claim 1 , wherein the insertion is applied to post production environment.
5. The method of claim 1 , wherein the insertion is applied to consumer products.
6. An electronic device for inserting a graphic element in a 3D image, said electronic device being associated with a display device for displaying the 3D image, wherein the electronic device comprises:
a memory;
at least one processor coupled to the memory, the at least one processor being configured to:
obtain for the graphic element to be inserted, at least a length L of said graphic element, a depth z associated with said graphic element for the insertion and an insertion zone in said 3D image;
determine for the graphic element to be inserted a maximal allowed depth value z max corresponding to the minimum depth value of the image in the insertion zone so that the graphic element is not overlapped by the corresponding part of the 3D image in said insertion zone;
keep the depth value of the graphic element by the maximal allowed depth value when a depth value of the graphic element to be inserted is superior to the maximal allowed depth value, and
compensate the depth difference between the depth value of the graphic element to be inserted which is superior to the maximal allowed depth value and the maximal allowed depth value in reducing the graphic element in size proportionally to the reduction of depth for the graphic element such that said graphic element, positioned at the maximal allowed depth value z max , has at least a length value I equal to (z max *L)/z.
7. The electronic device for inserting a graphic element in a 3D image according to claim 6 , wherein said at least one processor further determines a bounding box around the graphic element so that at least a length and a depth value of the bounding box replace said at least length L and depth z associated with the graphic element.
8. The electronic device for inserting a graphic element in a 3D image according to claim 6 , wherein the graphic element to be inserted has further a width W, and wherein said at least one processor is further configured to perform a size reduction such that said graphic element, positioned at the maximal allowed depth value z max , has a width value w equals to (z max *W)/z.
9. The electronic device for inserting a graphic element in a 3D image according to claim 7 , wherein the graphic element to be inserted has further a width W, and wherein said at least one processor is further configured to perform a size reduction such that said graphic element, positioned at the maximal allowed depth value z max , has a width value w equals to (z max *W)/z.
10. The method of claim 2 , wherein the insertion is applied to post production environment.
11. The method of claim 3 , wherein the insertion is applied to post production environment.
12. The method of claim 2 , wherein the insertion is applied to consumer products.
13. The method of claim 3 , wherein the insertion is applied to consumer products.