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Not carefully thought about this issue before, has been somewhat vague concepts, tidy here and I think the resulting learning, for your reference, welcome criticism.
concept
- Resolution Camera
Camera resolution is determined by the total of the photosensitive member in a CCD or CMOS camera. A CCD camera as an example, many tiny implanted on the CCD light-sensitive material, i.e., a so-called photosensitive elements of the pixel (Pixel), a photosensitive element corresponding to a pixel. Thus, the camera resolution is the total number of the photosensitive member, i.e. the total number of pixels. Visible camera with the resolution of the camera's hardware design-related, a camera, once manufacturing is completed, that is, not to change the resolution, computer screen, mobile phone screen resolution is the same reason. - Image Resolution
Image resolution is the number of pixels in the image may be provided, for example: an image resolution is 1280 × 720, that is to say in the absence of image scaling premise, 1280 pixels in the horizontal direction with the vertical direction 720 pixels; - Image Size
Image size: refers to the image width and height, wherein the width of the pixel columns of the image composed of the representative, the representative image of high pixel rows. ps: here is the image size in pixels.
Think
- Thinking 1:
Since the camera resolution can not be changed, then use the same camera was how to shoot different resolution images of it? When using the camera take a picture, often set different parameters of the resolution, in order to obtain a different resolution images. As mentioned above, since the camera resolution is a inherent properties, can not be changed, using the same camera that is how to shoot different resolution images of it? - A: The
different resolution images of the camera, in fact, does not make sense, because the camera resolution parameters are fixed, which means that the camera can only get its native resolution (maximum resolution) images. The same camera images at different resolutions, it is on the basis of the camera to get the maximum resolution of the picture, by hardware or software processing algorithms obtained. Similarly, the computer adjust the screen resolution size, the actual screen resolution size has not changed, but the effective number of pixels of the display changes only.
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