All along, I on the mobile resolution, pixels, such as the concept of silly, special look at a number of cattle people blog after the summary of the following points for future review.
Document Source
Http://weizhifeng.net/you-should-know-about-dpi.htmlHttp://www.chinaz.com/manage/2015/0902/441624.shtmlHttp://www.cnblogs.com/2050/p/3877280.htmlHttp://www.uisdc.com/mobile-ui-measurement-guidelineHttp://www.25xt.com/appdesign/8336.htmlhttp://www.zhan
References organized from: HTTPS://GITHUB.COM/JAWIL/BLOG/ISSUES/21http://www.jianshu.com/p/af6dad66e49aPX: px is a relative unit, relative to the device pixel ( device pixel ) margin:2px, where the PX is a logical pixel .PPI: The number of pixels per inch, put on the monitor is about how many physical pixels per inch and the point distance of the display device.DPI: How many dots per inch. It is also determ
In this mini-series article I will explain viewport, and how the width of many important elements works, such as elements, including windows and screensThis article is about desktop browsers, and its sole purpose is to pave the way for similar discussions in mobile browsers. Most developers intuitively understand the concept of most desktop browsers. On the mobile side we will be exposed to the same concept, but it will be more complex, so a pre-discussion of the terminology you already know wi
It's not always clear what the 1px in CSS has to do with logical pixels and physical pixels (as a front-end feeling very ashamed-_-! , today finally took the time to thoroughly figure out, in fact, after figuring out that things are very simple, but also only after figuring out, will feel simple (the language of "Zen and motorcycle Repair Art", haha haha).Two kinds of pixelsPhysical pixel : The pixel point
I do not understand this passage:
Later, with the development of technology, mobile device screen pixel density is getting higher, starting from iphone4, Apple introduced the so-called Retina screen, the resolution increased by one times, to become 640x960, but the screen size has not changed, which means that the same size of the screen, the pixel is more than one time, then, A CSS pixel is equal to two physical pixels.
There is also a factor that
OverviewThe terms screen resolution, device pixels (device-width), and css pixels (width) are interchangeable in very many contexts, but are therefore easy to confuse where there is a difference. In fact, they are different concepts.Screen resolution and device pixels are physical concepts, while CSS pixels are the con
OverviewThe terms screen resolution, device pixels (device-width), and css pixels (width) are in very many contexts. are interchangeable, but so easy can cause confusion in different places, in fact they are distinct concepts.Screen resolution and device pixels are physical concepts, while CSS pixels are the concept of
Recently asked by a friend: CSS set a DOM height:65px, is the height of the display and Android 65DP elements such as high? The brain flashed a bunch of concepts, such as DPR,PPI,DP,PT, but thought for a while, paste, so re-combed the relevant knowledge, in case of a rainy day.1.ppiThe PPI refers to pixels per inch, which is the pixel point of the pixel, where the pixels are the physical
Height self-adaptive: The height self-adaptive is based on pixels (px). It is suitable for single-screen pages and single-screen pixels.
/* Adaptive height based on pixels (px), suitable for single screen pages * // set the height (extending to the bottom of the browser or extending to the bottom of the reference element, you can set a small amount) $. fn. fnSetH
Although in the Web App development, only need to master the page layout, page adaptation, the page can be perfect on a variety of devices to show. But why do you do that? What is the rationale for this? So what's the advantage? If you go down, you may not be clear. So, let's study the next ~. 2 pixels Device pixel device pixels refers to the physical pixels use
1, device independent pixels: the physical pixels of the device screen, the number of physical pixels of any device is fixed2, css pixels (css pixels): Also known as logical pixels, is created for Web developers, in CSS and JavaSc
OverviewScreen resolution, device pixels, and CSS pixels these terms, which are interchangeable in very many contexts, are therefore easy to confuse where there are differences, in fact they are different concepts.Screen resolution and device pixels are physical concepts, while CSS pixels are the concept of Web program
Why do you need to move this button three pixels and the button three pixels
Every 1 ~ The speed of translating an article within two weeks, and translating articles related to user experience design, interaction design, and Internet product design. It is inevitable that there will be errors in the translation just beginning, in addition, I will not translate the translation based on the original author's s
Original from: Original addressBecause this error causes a lot of wasted time to find out why, so hurry up and record it.The process is this, when using Android to read pictures, is the use of Bitmapfactory.decoderesource (This.getresources (), r.drawable.base) whenThe size of the returned picture is not the same as the real picture size, for example, the picture is 700*450, but read out is 525*337. If you have encountered this kind of situation, please look downThis mistake, just can blame us f
conversion method, some people will ask why the network conversion method is followed by 0.5?
The reason for adding 0.5 is to ensure that the returned value is greater than 0. We have verified the TypedValue. complexToDimensionPixelSize method.
/*** Converts a complex data value holding a dimension to its final value* As an integer pixel size. This is the same* {@ Link # complexToDimension}, cannot the raw floating point value is* Converted to an integer (pixel) value for use as a size. A size*
OpenCV Learning (Pixel operation manipuating the Pixels)
OpenCV Although there are many types of image processing functions, you can do a variety of common image processing, but there will always be some operations are not, then we need to manipulate the pixels, to achieve the functions we need. Today we will talk about several methods of OpenCV for pixel-level operation, and make a comparison.
In OpenCV,
These are basic concepts, but the more basic the concept is, the more general it is, the less common this concept is in normal work, but sometimes I can't make it clear when I think of it or when someone asks.I searched the information on the Internet and it seems to be a little more detailed.1. What is pixel?
To put it simply, what we usually call pixels is the number of photoelectric sensing elements on CCD/CMOS. After a photosensitive element passe
First, let us know an unfortunate message: pixels cannot be directly converted into inches or centimeters, and must be converted under DPI!
Two types of resolution conversion in Photoshop72 pixels/inch = 28.346 pixels/centimeter300 pixels/inch = 118.11 pixels/centimeter1 C
[Jing Wei shared: How to keep pixels perfect ?] Most people are exhausted to ensure that the color, texture, and position of each pixel are displayed accurately. With Caution, some common operations such as moving, rotating, and pasting will render your work hard. However, if you can make small changes to your workflow, you can always maintain the high-quality work in the project.
Perfect pixel Rotation
If you are not careful enough, rotating the laye
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