Everest

生产工具插件大小: 66.86KiB版本: v 1.3.0更新时间: 2021-12-21
大小:66.86KiB版本:v 1.3.0更新时间:2021-12-21

An extension for automatically adjusting zoom level based on eye distance, requires webcam

Everest 的使用方法详解,最全面的教程


Everest 描述:

用户数:212

分类:生产工具插件

扩展大小:66.86 KiB

最后更新时间:2021-12-21

版本:v 1.3.0


Everest 插件简介:

这是来自Chrome商店的 Everest 浏览器插件,您可以在当前页面下载它的最新版本安装文件,并安装在Chrome、Edge等浏览器上。


Everest插件下载方法/流程:

点击下载按钮,关注“扩展迷Extfans”公众号并获取验证码,在网页弹窗中输入验证码,即可下载最新安装文件。


Everest插件安装教程/方法:

(1)将扩展迷上下载的安装包文件(.zip)解压为文件夹,其中类型为“crx”的文件就是接下来需要用到的安装文件

(2) 从设置->更多工具->扩展程序 打开扩展程序页面,或者地址栏输入 Chrome://extensions/ 按下回车打开扩展程序页面

(3) 打开扩展程序页面的“开发者模式”

(4) 将crx文件拖拽到扩展程序页面,

完成安装如有其它安装问题,

请扫描网站底部二维码与客服联系如有疑问请参考:

https://www.extfans.com/installation/
Everest is a Chrome extension that enlarges text on web pages when you move away from the computer screen. Requires a front-facing webcam. For those with two cameras, go to chrome's Settings > Show advanced settings > Privacy > Content settings > Media > Camera. #### Instructions 1. click the Everest extension icon to start tracking 2. press Ctrl+Shift+3 at any time to re-calibrate distance for default zoom level 3. click the Everest extension icon to stop tracking and go back to original zoom level 4. optionally change jitter tolerance (default 10% zoom) and sample time (default 750ms) by right clicking on extension icon > options #### Inspiration Computer users often sit in one static position, which leads to pain and higher risk of health issues. To reduce strain, one should frequently change one's posture while using a computer. However, Herman Miller, a high-end furniture maker, noted in their [research](http://www.hermanmiller.com/research/solution-essays/maintaining-concordance-as-seated-postures-change.html) that ability to view materials on the screen is the most paramount need for computer users, and will stay in unhealthy postures if the alternative is an illegible screen. When our team members worked together previously, we noted that one team member always changes the zoom level in Google Chrome as he changes his posture so that text stays legible when he moves away from the screen. We realized that this zooming can be automated by using a webcam to measure the distance between the user and the screen, and automatically adapt the text size according to the user's position. In doing so, we hope to make posture changes more natural, and thus improve the working conditions of computer users. #### Implementation We implemented Everest as a lightweight Chrome extension that runs in the background to detect the user's position and zooms the page. The user can enable or disable the automatic zoom with a single click, and can press a key sequence (default to Ctrl+Shift+3) to recalibrate the resting position. The core facial detection is handled by [Neave's face detection library](https://github.com/neave/face-detection). To access the webcam, we used WebRTC, part of HTML5, to stream the video data. We tweaked the detection frequency for efficiency: the current version samples the video at 4/3hz to avoid CPU usage. In initial testing, we discovered that the page would often "jitter", where the zoom will repeatedly change as the video data changes slightly, which disrupts reading. We fixed this problem by avoiding zoom changes that are less than 10%. The actual zooming is performed by Chrome's zoom API, which was recently introduced on the Dev channel in Chrome 42, so this extension is one of the first extensions to take advantage of this feature.

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