的高度和宽度的形象代表的像素数量，将填补渲染窗口。
The height and width of the image represent the number of pixels that will fill the rendering window.
减小像素尺寸可以在相同尺寸的传感器上大大的提高像素数量。
The advantage of a reduced pixel size could dramatically increase the number of pixels that could fit into a sensor of the same size.
边界指的是图像的每一个边框，这个边框的像素数量是不随着图片缩放而变化的。
The number of pixels that will not scale with the texture at each edge of the image.
边界指的是图像的每一个边框，这个边框的像素数量是不随着图片缩放而变化的。
The number of pixels that will not scale with the texture at each edge of the image.
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