Abstract:
A 3D image processing method includes providing image data, generating a first visual angle image and a second visual angle image according to the 3D image data, blurring the first visual angle image, enhancing the second visual angle image, and displaying the blurred first visual angle image and the enhanced second visual angle image. The 3D image processing method reduces a ghost effect when watching 3D images.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a 3D image processing method, and more particularly, to a 3D image processing method with a reduced ghost effect. 
         [0003]    2. Description of the Prior Art 
         [0004]    Please refer to  FIG. 1 .  FIG. 1  is a diagram illustrating a 3D image processing method of the prior art. As shown in  FIG. 1 , when a 3D display device  100  receives image data LR, an image processing unit  110  of the 3D display device  100  generates a left visual angle image L and a right visual angle image R according to the image data LR. Then, a display panel  120  of the 3D display device  100  displays the left visual angle image L and the right visual angle image R to be seen by a left eye and a right eye of a user respectively in order to form a 3D image visually. 
         [0005]    There are two kinds of methods for displaying the left visual angle image L and the right visual angle image R by the 3D display device  100 . In one method, the display panel  120  displays the left visual angle image L and the right visual angle image R simultaneously, and utilizes an optical polarization component for arranging a polarization direction of the left visual angle image L to be different from a polarization direction of the right visual angle image R, and a left eye and a right eye of a user can see the left visual angle image L and the right visual angle image R respectively through a pair of polarized glasses. In another method, the display panel  120  displays the left visual angle image L and the right visual angle image R sequentially, and the left eye and the right eye of the user can see the left visual angle image L and the right visual angle image R respectively through a pair of shutter glasses, which shutter a left glass and a right glass sequentially. 
         [0006]    However, the above 3D display methods might generate ghost images due to wrong shuttering timing or poor polarization ability, such that a ghost effect arises, where the left eye sees the right visual angle image R partially or the right eye sees the left visual angle image L partially. Consequently, the user will see one object has two edges. 
       SUMMARY OF THE INVENTION 
       [0007]    The present invention provides a 3D image processing method. The method comprises providing image data, generating a first visual angle image and a second visual angle image according to the image data, blurring the first visual angle image, enhancing the second visual angle image, and displaying the blurred first visual angle image and the enhanced second visual angle image. 
         [0008]    The present invention further provides a 3D display device. The 3D display device comprises an image processing unit and a display panel. The image processing unit is for receiving image data, generating a first visual angle image and a second visual angle image according to the image data, and blurring the first visual angle image as well as enhancing the second visual angle image. The display panel is for displaying the blurred first visual angle image and the enhanced second visual angle image. 
         [0009]    These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is a diagram illustrating a 3D image processing method of the prior art. 
           [0011]      FIG. 2  is a diagram illustrating a 3D image processing method of the present invention. 
           [0012]      FIG. 3  is a diagram showing an image processing unit  210  of the present invention. 
           [0013]      FIG. 4  is a diagram showing a first embodiment of a 3D display device of the present invention. 
           [0014]      FIG. 5  is a diagram showing a second embodiment of the 3D display device of the present invention. 
           [0015]      FIG. 6  is a diagram showing a third embodiment of the 3D display device of the present invention. 
           [0016]      FIG. 7  is a flowchart showing a 3D image processing method of the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0017]    Please refer to  FIG. 2 .  FIG. 2  is a diagram illustrating a 3D image processing method of the present invention. As shown in  FIG. 2 , when a 3D display device  200  receives image data LR, an image processing unit  210  of the 3D display device  200  generates a left visual angle image L and a right visual angle image R according to the image data LR. Then the image processing unit  210  processes the left visual angle image L and the right visual angle image R in order to reduce the ghost effect. For example, the image processing unit  210  blurs the left visual angle image L for making edges of objects in the blurred left visual angle image L′ unclear. In addition, the image processing unit enhances the right visual angle image R for sharpening edges of objects in the enhanced right visual angle image R′. Then, a display panel  220  displays the blurred left visual angle image L′ and the enhanced right visual angle image R′ to be seen by a left eye and a right eye of a user respectively in order to form a 3D image visually. Since the blurred left visual angle image L′ removes most edge data from the original left visual angle image L while retaining original color data, and the enhanced right visual angle image R′ reinforces edge data of the original right visual angle image R, when forming the 3D image visually, edge data of the 3D image is mostly provided from the enhanced right visual angle image R′. Therefore, to a user, even if the left eye sees the right visual angle image partially and the right eye sees the left visual angle image partially, the object of the 3D image only has one edge visually, which further reduces the ghost effect. 
         [0018]    In the above embodiment, the present invention takes an example of blurring the left visual angle image and enhancing the right visual angle image. However, the present invention is not limited to the above example. In other embodiments, the present invention can blur the right visual angle image and enhance the left visual angle image, or blur/enhance the left visual angle image and the right visual angle image interlacedly. In addition, a blur degree of an image can be adjusted according to a parameter. When the parameter is 0, the image is not blurred as the original image. As the parameter increases, the blur degree of the image gets higher. Similarly, an enhancement degree of the image can be also adjusted according to a parameter. When the parameter is 0, the image is not enhanced as the original image. As the parameter increases, the enhancement degree of the high-frequency data of the image gets higher. 
         [0019]    Please refer to  FIG. 3 .  FIG. 3  is a diagram showing an image processing unit  210  of the present invention. As shown in  FIG. 3 , the image processing unit  210  comprises a low-pass filter  212 , a high-pass filter  214 , and a signal adder  216 . The low-pass filter  212  is for filtering out high-frequency data of the first visual angle image L in order to generate the blurred first visual angle image L′. Frequency of edge data is normally higher in digital image data. Therefore, the edges of objects of the blurred first visual angle image L′ are weakened. The high-pass filter  214  is for computing high-frequency data of the second visual angle image R. The signal adder  216  is for adding the computed high-frequency data to the second visual angle image R in order to generate the enhanced second visual angle image R′. The blurred first visual angle image L′ and the enhanced second visual angle image R′ are generated according to the above image processing procedures. The above low-pass filter  212  can be a Gaussian filter, and the above high-pass filter  214  can be a Laplacian filter. To those skilled in the art, the Gaussian filter and the Laplacian filter can be replaced by other types of filters or algorithms to achieve the same result. 
         [0020]    Please refer to  FIG. 4 .  FIG. 4  is a diagram showing a first embodiment of a 3D display device of the present invention. A display panel  220 A of a 3D display device  200 A is for displaying the blurred first visual angle image L′ and the enhanced second visual angle image R′ simultaneously. The display panel  220 A further comprises an optical polarization component  222  for arranging a polarization direction of the blurred first visual angle image L′ to be different from a polarization direction of the enhanced second visual angle image R′, such that the left eye and the right eye of the user can see the blurred first visual angle image L′ and the enhanced second visual angle image R′ respectively through a pair of polarized glasses. 
         [0021]    Please refer to  FIG. 5 .  FIG. 5  is a diagram showing a second embodiment of the 3D display device of the present invention. A display panel  220 B of a 3D display device  200 B is for displaying the blurred first visual angle image L′ and the enhanced second visual angle image R′ sequentially, such that the left eye and the right eye of the user can see the blurred first visual angle image L′ and the enhanced second visual angle image R′ respectively through a pair of shuttering glasses, which shutters a left glass and a right glass sequentially. 
         [0022]    Please refer to  FIG. 6 .  FIG. 6  is a diagram showing a third embodiment of the 3D display device of the present invention. A display panel  220 C of a 3D display device  200 C is for displaying the blurred first visual angle image L′ and the enhanced second visual angle image R′ simultaneously. The display device  200 C further comprises a lens film  224 . A plurality of lenticular lenses formed on the lens film  224  are for projecting the blurred first visual angle image L′ and the enhanced second visual angle image R′ in different projection angles. The left eye and the right eye of the user can directly see the blurred first visual angle image L′ and the enhanced second visual angle image R′ respectively without wearing any glasses. 
         [0023]    Please refer to  FIG. 7 .  FIG. 7  is a flowchart  700  showing a 3D image processing method of the present invention. The flowchart of the 3D image processing method of the present invention comprises the following steps: 
         [0024]    Step  710 : Provide image data; 
         [0025]    Step  720 : Generate a first visual angle image and a second visual angle image according to the image data; 
         [0026]    Step  730 : Blur the first visual angle image; 
         [0027]    Step  740 : Enhance the second visual angle image; and 
         [0028]    Step  750 : Display the blurred first visual angle image and the enhanced second visual angle image. 
         [0029]    Basically, the steps of the flowchart  700  need not be in the exact order shown and need not be contiguous, that is, other steps can be inserted between. In addition, the step  730  need not be behind the step  740 . The step  730  and the step  740  can be conducted simultaneously. 
         [0030]    Summarizing the above, the 3D image processing method of the present invention allows the user to receive edge data from only one visual angle image by blurring the first visual angle image and enhancing the second visual angle image. Therefore, each object of the 3D image only has one edge, which further reduces the ghost effect. 
         [0031]    In contrast to the prior art, the present invention provides a 3D image processing method to reduce the ghost effect, which not only prevents brightness reduction of the image, but also reduces complexity of a hardware structure of the 3D display device. 
         [0032]    Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.