图像的最大分辨率是多少？ [英] what is the maximum resolution of an image?

问题描述

朋友们，

图像的最大分辨率（每英寸点数）是多少（宽度：480和高度：640）



或



图像分辨率为640 x 480的最大像素是多少。这意味着当我放大这个分辨率的图像图片时，我想要像原版一样清晰。

hi friends,
what is the maximum resolution(dots per inch) of image(width:480 and height:640)

or

what is the maximum pixels of 640 x 480 resolution of an image. That means when i zoom-in the Image picture of this resolution i want clarity as like original.

推荐答案

嗯，你有点（ 480x640 ）但你没有英寸，因此你的图像的'每英寸点数'值是未定义的。



现在假设您的图像（例如，在监视器屏幕上渲染）的大小 3.2 x 4.27英寸，那么它的每英寸点数值为 150 > x 和 y 轴。

Well, you have dots (480x640) but you don't have inches, hence the 'dots per inch' value(s) of your image is (are) undefined.

Now suppose your image, rendered, for instance, on monitor screen, has size 3.2 x 4.27 inches, then its 'dots per inch' value is 150 both on x and y axis.

这是你要找的东西。

http：//www.shortcourses .com / sensors / sensors1-11.html [ ^ ]

Is this something you are looking for.
http://www.shortcourses.com/sensors/sensors1-11.html[^]

如果您以1：1缩放显示图像，它将具有最大清晰度，当您缩放时，必须复制像素才能使它们看起来像双gger。这会导致图像在放大时看起来像素化。或者，如果缩小，像素必须组合成较小的像素，这将导致图像模糊。



分辨率是分辨率，显示器有很多像素X和Y以及所谓的原生分辨率，即显示适配器试图显示为屏幕物理上包含许多像素..



显示器还具有取决于设备的本机每英寸点数。例如，一个5英寸的手机屏幕可以有1280x1024像素，比具有相同分辨率的笔记本电脑屏幕具有更高的DPI。



这一切都归结为如果你放大或缩小，你的图像将失去清晰度。你无能为力。改变图像分辨率的唯一方法是以该分辨率重新拍摄图像。任何减少或增加图像数量的方法。像素将需要一个算法来复制或组合像素，这显然是一个有根据的猜测，而不是现实世界。

If you are displaying the image at a 1:1 zoom it will have "maximum clarity", as you zoom, the pixels must be duplicated to make them seem bigger. This causes an image to look pixelated as you zoom in. Alternatively if you zoom out, pixels must be combined into smaller ones and will cause the image to become fuzzy.

Resolution is resolution, a monitor has so many pixels X and Y and what is called a "native resolution", that is, the display adapter is attempting to display as many pixels as the screen physically contains..

Displays also have a native "dots per inch" that is dependent on the device. For example, a 5" phone screen can have 1280x1024 pixels giving it a much higher DPI than a laptop screen with the same resolution.

This all boils down to if you are zooming in or zooming out, your image will lose clarity. There is nothing you can do about this. The only way to change the resolution of an image is to retake the picture at that resolution. Any method of reducing or increasing the number of pixels will need an algorithm to duplicate or combine pixels, which obviously is an educated guess not the real world.

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