pixels

问题 I have a website which uses pixel to render the pages. But when i view the website in different devices having different screen resolution the whole page will not fit into screen and if i use percentage , the page content will get squeezed . Is the responsive web design is the right choice to design the web page. If so, I have got few concerns. What is the risk involved in converting existing web site to incorporate responsive design. Is there any framework available to do this and which is

问题 I am working with Images in Java, I have designed more over 100+ images(.png) format, They were all Trasparent and Black Color Drawing. The problem is, Now I have been asked to change the color of the Drawing (Black -to ). I have searched many code snipped at google,that changes the Bitmap (pixels) of the Image, but i am not guessing what i have to do to match the exact pixel and replace specially when the images if in Transparent mode. Below is the code in .Net (C#) Bitmap newBitmap = new

问题 I\'m grabbing a portion of the screen and scanning through the pixels for a certain color range. I looked at MSDN\'s Capturing an Image example and know how to use the functions. I can get the bits into an array, but I\'m not sure how to do it in such a way that I can loop through it as I would an image. A pseudo-example (which I\'m sure is way off): for ( x = 1; x <= Image.Width; x += 3 ) { for ( y = 1; y <= Image.Height; y += 3 ) { red = lpPixels[x]; green = lpPixels[x + 1]; blue = lpPixels

问题 When creating an HTML page, should I specify things like margin s with pixels or with points in CSS? Is one of them considered to be better practice than the other? Any advantages or disadvantages to either one? 回答1: Use px or em CSS FONT-SIZE: EM VS. PX VS. PT VS. PERCENT Points (pt): Points are traditionally used in print media (anything that is to be printed on paper, etc.). One point is equal to 1/72 of an inch. Points are much like pixels, in that they are fixed-size units and cannot

问题 I am making a function using C++ and OpenCV that will detect the color of a pixel in an image, determine what color range it is in, and replace it with a generic color. For example, green could range from dark green to light green, the program would determine that its still green and replace it with a simple green, making the output image very simple looking. everything is set up but I\'m having trouble defining the characteristics of each range and was curious if anyone knows or a formula

问题 I need to access each pixel of a Bitmap, work with them, then save them to a Bitmap. Using Bitmap.GetPixel() and Bitmap.SetPixel() , my program runs slowly. How can I quickly convert Bitmap to byte[] and back? I need a byte[] with length = (4 * width * height) , containing RGBA data of each pixel. 回答1: You can do it a couple of different ways. You can use unsafe to get direct access to the data, or you can use marshaling to copy the data back and forth. The unsafe code is faster, but