pixel

The official W3C documentation says: 1 px = 1/96th of 1 in In my previous 18.5 inch screen, the screen.width was 1367 px and the screen width in inches was 14 inches . By the W3C formula: 14 * 96 px = 1344 px The W3C formula deviated by 20/14 px per inch . Since the deviation is too low, and 1 inch on my screen was 97.4 px I accepted the W3C formula, and believed that a CSS pixel is an absolute unit of measure , meaning it is always equal to 0.75 pt (a physical unit). This week I bought a 21.5 inch, full HD screen, which has width 19 inches and screen.width is 1920 px . So now 1 inch on my

Let's suppose I've got an image which shows its source in a scaled way, how could i use a MouseMove event to show in a label or textblock the pixel position in which the cursor is? (I need the pixel coordinates not the coordinates of the image relative to its size) Thanks in advance. You can find out the actual pixel height and width from the ImageSource. ImageSource imageSource = image.Source; BitmapImage bitmapImage = (BitmapImage) imageSource ; Now since you got the image displayed in Image control. You can easily map the mouse position to the Pixel scale. pixelMousePositionX = e

I have a struct of 8-bit pixel data: struct __attribute__((aligned(4))) pixels { char r; char g; char b; char a; } I want to use SSE instructions to calculate certain things on these pixels (namely, a Paeth transformation). How can I load these pixels into an SSE register as 32-bits unsigned integers? Unpacking unsigned pixels with SSE2 Ok, using SSE2 integer intrinsics from <emmintrin.h> first load the thing into the lower 32 bits of the register: __m128i xmm0 = _mm_cvtsi32_si128(*(const int*)&pixel); Then first unpack those 8-bit values into 16-bit values in the lower 64 bits of the register

这时跳转表单，填写账号密码，识别验证码这三项都已经完成，下面就开始模拟登入了（提前说明一下，这次模拟登入是在每张验证码都有固定的url，在下载到本地的验证码需要与打开网页时的验证码相同才行。你可以在网页中找到验证码的src打开两次，如果图片相同那么下面的登入应该就能成功了，如果不同那么下一篇介绍怎么解决） # 网络爬虫 验证码同步问题 from selenium import webdriver from selenium.common.exceptions import TimeoutException from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC from selenium.webdriver.common.keys import Keys import time from urllib.request import urlretrieve # 下面为识别函数 from shibie import recognize driver = webdriver.Firefox()# 下面为申请的代理检测问题用的 # profile = webdriver.FirefoxProfile() #

So I made an app using in Eclipse using the Graphical Editor, AbsoluteLayout , fixed pixel values, etc... just bad practice in general. It defaulted to a 3.7in screen . Is there any way to design a separate layout for each screen size and have the program choose which to load based on said screen size? cV2 Provide different layouts for different screen sizes By default, Android resizes your application layout to fit the current device screen. In most cases, this works fine. In other cases, your UI might not look as good and might need adjustments for different screen sizes. For example, on a

I have this one working but it is so damn slow on jpeg images and also needs some changing. I need to know the individual colours in an image (with a tolerance of +/- 1 for RGB) and the % of the image that is that colour. so if an image was black and white it would say something like White : 74% Black : 26% The code below works like I said but I need to add a tolerance system as well and I have no idea on how I would do that. private Dictionary<string, string> getPixelData(Bitmap image) { Dictionary<string, string> pixelData = new Dictionary<string, string>(); //int col, row; //int r, g, b;

I've been converting my own personal OGLES 2.0 framework to take advantage of the functionality added by the new iOS 5 framework GLKit . After pleasing results, I now wish to implement the colour-based picking mechanism described here . For this, you must access the back buffer to retrieve a touched pixel RGBA value, which is then used as a unique identifier for a vertex/primitive/display object. Of course, this requires temporary unique coloring of all vertices/primitives/display objects. I have two questions, and I'd be very grateful for assistance with either: I have access to a