Anaglyph ghost cancellation
View Patent ↗Ghosting of images can be produced by the use anaglyph techniques to produce stereoscopic images. Ghost effects can be produced when filtering is applied to images by displays such as televisions or monitors. Techniques and apparatus are described for reducing or cancelling ghost effects. Anaglyph ghost reduction information can be produced to reduce or cancel ghost effects.
1. An image processing method for generating images for a two-dimensional (2D) image display, the 2D image display comprising at least one image filter device for filtering images displayed thereon, the method comprising:
for left and right anaglyph image signals corresponding to a common image and having respective different color filtering applied thereto, generating a left ghost cancellation signal based upon the right anaglyph image signal configured to cancel the filtering thereof by the at least one image filter device of the 2D image display, and generating a right ghost cancellation signal based upon the left anaglyph image signal configured to cancel the filtering thereof by the at least one image filter device of the 2D image display;
combining the left and right anaglyph image signals with the left and right ghost cancellation signals, respectively, to generate corrected anaglyph signals; and
outputting the corrected anaglyph signals to the 2D image display.
2. The method of claim 1 wherein combining comprises summing the left and right anaglyph image signals with the left and right ghost cancellation signals, respectively.
3. The method of claim 1 wherein the at least one image filter device comprises a sharpness filter.
4. The method of claim 1 wherein the at least one image filter device comprises at least one of a peaking filter, a high pass filter, and an unsharp mask.
5. A non-transitory computer-readable medium for causing an image processing apparatus to generate images for a two-dimensional (2D) image display, the 2D image display comprising at least one image filter device for filtering images displayed thereon, and the non-transitory computer-readable medium having computer-executable instructions for causing the image processing apparatus to perform steps comprising:
for left and right anaglyph image signals corresponding to a common image and having respective different color filtering applied thereto, generating a left ghost cancellation signal based upon the right anaglyph image signal configured to cancel the filtering thereof by the at least one image filter device of the 2D image display, and generating a right ghost cancellation signal based upon the left anaglyph image signal configured to cancel the filtering thereof by the at least one image filter device of the 2D image display;
combining the left and right anaglyph image signals with the left and right ghost cancellation signals, respectively, to generate corrected anaglyph signals; and
outputting the corrected anaglyph signals to the 2D image display.
6. The non-transitory computer-readable medium of claim 5 wherein combining comprises summing the left and right anaglyph image signals with the left and right ghost cancellation signals, respectively.
7. The non-transitory computer-readable medium of claim 5 wherein the at least one image filter device comprises a sharpness filter.
8. The non-transitory computer-readable medium of claim 5 wherein the at least one image filter device comprises at least one of a peaking filter, a high pass filter, and an unsharp mask.
9. An image processing apparatus for generating images for a two-dimensional (2D) image display, the 2D image display comprising at least one image filter device for filtering images displayed thereon, said image processing apparatus comprising:
a processor and a memory cooperating therewith to
for left and right anaglyph image signals corresponding to a common image and having respective different color filtering applied thereto, generate a left ghost cancellation signal based upon the right anaglyph image signal configured to cancel the filtering thereof by the at least one image filter device of the 2D image display, and generate a right ghost cancellation signal based upon the left anaglyph image signal configured to cancel the filtering thereof by the at least one image filter device of the 2D image display,
combine the left and right anaglyph image signals with the left and right ghost cancellation signals, respectively, to generate corrected anaglyph signals, and
output the corrected anaglyph signals to the 2D image display.
10. The apparatus of claim 9 wherein said processor is configured to sum the left and right anaglyph image signals with the left and right ghost cancellation signals, respectively.
11. The apparatus of claim 9 wherein the at least one image filter device comprises a sharpness filter.
12. The apparatus of claim 9 wherein the at least one image filter device comprises at least one of a peaking filter, a high pass filter, and an unsharp mask.