how to change dpi of image

This article is a personal blog backup article, the original address:http://validvoid.net/win2d-dpi-dips/This article is intended to explain the difference between physical pixels and device-independent pixels (DIPs, devices independent pixels), and

Basic mobile phone resolution knowledge (DPI, DIP computing) 1. terms and concepts Terms Description Remarks Screen size) It refers to the actual physical size of the mobile phone, such as the commonly used 2.8 inch, 3.2

Application Scenario: the Canvas can generate the JPG tag based on the product information read from the database. However, the default resolution (DPI) of the JPG image is 72, which is too low, as a result, the printed image will be blurred and the

Original: "C#/WPF" modifies the DPI and Resolution of the imageProblem:The DPI of the image used by default in WPF is 96. If the dpi of the voxel we are using is not 96 o'clock (for example, 72), then WPF will automatically change the DPI of the

Now the consumer electronic devices screen more and more small, but the resolution is increased, such as Surface pro,10.6 inch screen, 1080p Full HD display, will make Windows display text becomes unusually small. This phenomenon is due to the fact

Now the consumer electronic devices screen more and more small, but the resolution is increased, such as Surface pro,10.6 inch screen, 1080p Full HD display, will make Windows display text becomes unusually small. This phenomenon is due to the fact

Now the consumer electronic devices screen more and more small, but the resolution is increased, such as Surface pro,10.6 inch screen, 1080p Full HD display, will make Windows display text becomes unusually small. This phenomenon is due to the fact

Now the consumer electronic devices screen more and more small, but the resolution is increased, such as Surface pro,10.6 inch screen, 1080p Full HD display, will make Windows display text becomes unusually small. This phenomenon is due to the fact

I know the differences among px, dpi, dp, dip, sp, in, and pt, pxdpi Px: That is, pixels. 1px indicates a physical pixel on the screen; The unit of px is not recommended, because the actual size of the same px image may be different on different

Pixel (pixel) Pixel or PX is a basic unit of a computer's screen device, which is a point. All other units have a fixed proportional Conversion Relationship with pixels. When all length units are displayed on the screen, they are converted to the