如何在不降低质量的情况下增加图像尺寸？ [英] How do I increase the size of images without losing the quality?

问题描述

您好，



- 也许您知道有一些专业的绘图软件（Microsoft Visio，SmartDraw等）能够绘制不同的对象（计算机） ，鲜花，汽车等）。我看到他们能够在不损失图像质量的情况下绘制非常大的物体（图像）。

这是我的问题：无论我们对图像进行多大的调整，是否有保持图像清晰度的秘诀？当然，我知道你不能用50x50像素的图像创建一个好的1000x1000像素图像，但即便如此，我认为在处理图像时我还有一些不知道的东西。

-基本上，这些软件，保存带有图像的数据库，然后，这些图像被提取并显示在屏幕上。



-I我正在使用C ++ / MFC中的小型绘图应用程序，从这个角度我需要一些答案。





祝你好运！ br $> b $ b

PS：我的英语听起来不错，我不是母语人士，抱歉。



< b>我尝试了什么：



问题和'你尝试过什么'必须至少30个字符。

我只是想要一些想法，而不是代码，所以，我暂时没有尝试过任何东西。

Hello,

-Maybe you know that there are some professional drawing software (Microsoft Visio, SmartDraw, etc.) which are able to draw different objects (computers, flowers, cars, etc.). I saw that they are able to draw very big objects (images) without losing the quality of the image.
And here is my question: is there a secret for keeping the clarity of the image irrespective of how much we scale that image? Of course, I know that you can't create a good 1000x1000 pixels image from a 50x50 pixels image, but, even so, I think that there is something that I don't know in working with images.
-Basically, these software, keep a database with images, then, these images are extracted and displayed on the screen.

-I'm working on a small drawing application in C++/MFC, and I need some answers from this perspective.


Best regards!

PS: My english may sound wird, I'm not a native speaker, sorry.

What I have tried:

Both the question and 'What have you tried' must be at least 30 characters.
I just want some ideas, not code, so, I have not tried anything for the moment.

推荐答案

他们没有绘制正常的位图图像。质量不会降低，因为这些应用程序正在绘制向量和填充区域。那些不是缩放的位图图像。

They're not drawing a normal bitmap image. The quality doesn't degrade because those apps are drawing vectors and flood filling areas. Those are NOT scaled bitmap images.

这是一个关于'秘密'的链接

矢量图形 - 维基百科，免费的百科全书 [ ^ ]



请记住，它们不是您用相机拍摄的照片。这些是位图。

位图 - 维基百科，免费的百科全书 [ ^ ]

Here is a link about the 'secret'
Vector graphics - Wikipedia, the free encyclopedia[^]

Remember, they are not pictures you take with your camera. these are bitmap.
Bitmap - Wikipedia, the free encyclopedia[^]

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