The 3D image quality can be evaluated subjectively from four aspects: 3D sense, clarity, matching degree, brightness.
    1. 3D sense
The foreground and setting of 3D image inevitably produce double image, under the premise of ensuring definition (double image is in the allowable range), the biggest three-dimensional depth from foreground to setting can be felt. Here, the three-dimensional depth refers to the depth of field rather than to the actual depth of filmed scene. According to the 3D depth felt by eyes, 3D sense is elaluated, larger the felt depth is, stronger 3D sense is. 

    2. Definition
    It is related with the resolution of raster image, the nature of grating ( pitch, width, light transmission ). Within particular scope of the viewing distance, we couldn't discern the definition and image quality between the lenticular lens line of the lenticular lens surface and image pixels of 3D image.

    3.Matching degree

    The matching degree of lenticular lens board and raster image influences the quality of three-dimensional images, and the images with bad matching will be dizzy.
    4. Brightness
    Images with high brightness look comfortable, image quality is better; Over-dark image will affect the enjoying effect and the quality of the images is worse. Due to the effect of lenticular lens,  the brightness of the 3D image will reduce, thus affecting the watching effect of the image. Using the lenticular lens sheet of high light transmission can reduce the brightness loss; At the same time when making raster image, we can increase brightness properly to compensate the brightness losses

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