retina biometrics

Apple's new 12 "slim MacBook is thinner than the thinnest MacBook Air ever, but comes with a retina display. The 12-inch Retina MacBook has a display resolution of 2304*1440, which is not as good as 15-inch and 13-inch Retina MacBook Pro, but far more than 13-inch MacBook Air and non-Retina screen 13-inch MacBook Pro.

) {} Samsung S3 @media only screen and (-webkit-device-pixel-ratio:2) {} Google Nexus 7 @media screen and (device-width:600px) and (device-height:905px) and (-webkit-min-device-pixel-ratio:1.331) and (-webki t-max-device-pixel-ratio:1.332) {} Samsung Galaxy S3 @media only screen and (-webkit-device-pixel-ratio:2) {} Samsung Galaxy S2 @media screen and (device-width:320px) and (device-height:533px) and (-webkit-device-pixel-ratio:1.5) {} Galaxy Tab 10.1 /*landscape*/@media (ma

The Apple MacBook Pro and MacBook Air will update its Retina screen and carry the Intel Haswell processor. As you can see, Apple usually launches the latest version of the MacBook laptop at the annual WWDC (Apple Computer Global Developers Conference) in June. Digitimes, a foreign website, said Apple's high price MacBook Pro, with a 13-inch retina screen, had previously puzzled consumers, so Apple is likel

Pixels per inch is the image resolution unit, the higher the image PPI value, the more details of the picture will be richer, because the number of pixels per unit area is more, so the picture taken out by the digital camera because of brand or production time may be different, common have 72ppi,180ppi and 300PPI, This is the default. (27-inch Imac,ppi with 5K resolution up to 217) When your cell phone screen is 10-12 inches (about 25-30 centimeters) from your eyes, its resolution

FREAK algorithm is a ICCV 2012 on the feature point detection and matching of the paper "Freak:fast Retina KeyPoint" proposed, from the article title can be seen that the algorithm is characterized by a rapid, Another feature is that the algorithm is inspired by the principle of human eye recognition objects.I've seen my blog post before, and I have now introduced SIFT algorithm, ORB algorithm, brief algorithm and brisk algorithm. It can be seen that

development, screen resolution is getting higher, that is, the same size of the screen can produce more and more light points, the corresponding pixels of the screen more and more. Especially since Apple used the retina Retina screen in IPONE4. Although the pixel density increases, the page color display quantity is more meticulous. But it bothers the mobile page layout. Easy to understand, data and unit r

APP Icon and Launch Images for iOS7.0 or later1. APP Icon File Name File Size (px) Used for [Email protected] 58 X Spotlight and Settings on devices with Retina display [Email protected] x 87 Settings on IPhone 6 Plus [Email protected] X 80 Spotlight on devices with Retina display [Email protected]

" content="black" />Default (white, defaults) | Black | Black-translucent (Translucent)Note: If the value "Black-translucent" will occupy the page position, floating above the page (will cover the page 20px height, Retina screen is 40px).WebApp corresponding link tag apple-touch-iconUnder WebApp, specify the path of the icon file on the home screen;link rel="Apple-touch-icon" href="Touch-icon-iphone.png " >link rel="Apple-touch-icon" sizes="76x76" hre

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See also: http://www.cocoachina.com/bbs/read.php?tid=229352page=1One, App IconsIOS 8 Update:[email protected]87*87[email protected]120*120[email protected]180*180Icon.png 57*57[email protected]114*114Icon-small.png 29*29[email protected]58*58Icon-small-50.png 50*50[email protected]100*100Icon-72.png 72*72[email protected]144*144Icon-40.png 40*40[email protected]80*80Icon-60.png 60*60[email protected]120*120Icon-76.png 76*76[email protected]152*152Two, launchimages4.0 inch screen:[email protected

Mobile Web page debugging skills and web debugging Source: Sheng Hanqin This article describes how to debug a local webpage and view the webpage of the test environment, covering debugging skills on PCs, iPad, and mobile terminals. The disadvantage of this article is that xiaoxi has not found any web pages for debugging on Chinese and Android browsers. Related device concepts: PC: It mainly refers to a desktop or notebook represented by a Windows system, which is usually 1 times the screen Ma

screen:[email protected](1242x2208 ~ for IPhone 6 Plus Portrait)5.5 inch screen:[email protected](2208x1242 ~ for IPhone 6 Plus Landscape)Retina IPad:[Email protected]~ipad.png (1536x2048 ~ for Retina ipad Portrait)Retina IPad:[Email protected]~ipad.png (2048x1536 ~ for Retina ipad Landscape)IPad Mini/ipad:Default-por

? Shadows, rounded corners, colored borders 3D transformations Non-rectangular Range Transparent matte Multi-stage Nonlinear animation Contents propertyThe type of this property is defined as an ID, which means it can be any type of object. However, in practice, if you give contents not cgimage, then the layer you get will be blank .Contents this strange performance is caused by the historical causes of Mac OS. It is defined as the ID type because on Mac OS systems,

="application">"x5-page-mode" content="app">"msapplication-tap-highlight" content="no">"apple-touch-icon-precomposed" href="/apple-touch-icon-57x57-precomposed.png"/>57x57 像素，必须有 -->"apple-touch-icon-precomposed" sizes="114x114" href="/apple-touch-icon-114x114-precomposed.png"/>114x114 像素，可以没有，但推荐有 -->"apple-touch-icon-precomposed" sizes="144x144" href="/apple-touch-icon-144x144-precomposed.png"/>144x144 像素，可以没有，但推荐有 -->"apple-touch-startup-image" sizes="768x1004" href="/splash-screen-768x1004.p

: // The apple-touch-icon image is automatically processed into rounded corners and highlights. // Apple-touch-icon-precomposed prohibits the system from automatically adding results to directly display the design source image. // IPhone and iTouch, 57x57 pixels by default, must have // IPad, 72x72 pixels, which can be none, but recommended // Retina iPhone and

1024x1024 pixels (it cannot be scaled up). The file type must be in JPEG format. Jpg. Tif,tiff format or. png. It must be a flat piece with no rounded corners. 】 3.5-inch Retina Display" screenshots 3.5-inch screen, five-sheet screen 3.5 inch iphone and ipod The retina display on the touch must be 960x640,960x600,640x960 pixels or 640x920 pixels, at least 72 parts in the RGB color space, and in

that may be required to test your application, such as application-specific settings and test notes or Account details. Recall that the memo field cannot exceed 4000 bytes. Demo account information If the app needs to be logged in, provide a test ID to facilitate the auditNext, upload some icons " Note: Assuming that the upload is very slow, open network preferences, advanced->dns, add two dns:114.114.114.114 8.8.8.8 "Iarge appicon1024 *1024 icon "an app with a large version number will be in