pixel

问题 I would like to fade the color of a pixel out toward white, but obviously maintain the same color. If I have a pixel (200,120,40) , will adding 10 to each value to make (210,130,50) make it the same color, just lighter, or will it change the color entirely? For example, I know that (100,100,100) going to (110,110,110) is a greyscale fade. I would like the same with RGB values and I would like to do it numerically, as indicated. Is there an equation to do so? 回答1: There are a bunch of ways to

问题 I am creating a little bootloader+kernel and till now I managed to read disk, load second sector, load GDT, open A20 and enable pmode. I jumped to the 32-bits function that show me a character on the screen, using the video memory for textual content (0x000B0000 - 0x000B7777) pusha mov edi, 0xB8000 mov bl, '.' mov dl, bl mov dh, 63 mov word [edi], dx popa Now, I would like to go a little further and draw a single pixel on the screen. As I read on some website, if I want to use the graphics

问题 I am creating a little bootloader+kernel and till now I managed to read disk, load second sector, load GDT, open A20 and enable pmode. I jumped to the 32-bits function that show me a character on the screen, using the video memory for textual content (0x000B0000 - 0x000B7777) pusha mov edi, 0xB8000 mov bl, '.' mov dl, bl mov dh, 63 mov word [edi], dx popa Now, I would like to go a little further and draw a single pixel on the screen. As I read on some website, if I want to use the graphics

问题 I am creating a little bootloader+kernel and till now I managed to read disk, load second sector, load GDT, open A20 and enable pmode. I jumped to the 32-bits function that show me a character on the screen, using the video memory for textual content (0x000B0000 - 0x000B7777) pusha mov edi, 0xB8000 mov bl, '.' mov dl, bl mov dh, 63 mov word [edi], dx popa Now, I would like to go a little further and draw a single pixel on the screen. As I read on some website, if I want to use the graphics

问题 A bit of a silly question but important for me to understand. As far as I know when using the inline "width" attribute in HTML, it is permitted to omit "px" - - will automatically be understood as "20px" unless percentage("20%") is used. My question is: Is it wrong to use the "..px" even though it's not needed? The code seem so much cleaner to me, it follows the same rule as CSS and least but not last - it doesn't bug me anytime I look at it. Thanks in advance. 回答1: This is never stated

问题 I'm using Windows Desktop Duplication API to make my own mirroring protocol. I have this piece of code : // Get new frame HRESULT hr = m_DeskDupl->AcquireNextFrame(500, &FrameInfo, &DesktopResource); if (hr == DXGI_ERROR_WAIT_TIMEOUT) { *Timeout = true; return DUPL_RETURN_SUCCESS; } Here is the FrameInfo structure : `typedef struct _FRAME_DATA { ID3D11Texture2D* Frame; DXGI_OUTDUPL_FRAME_INFO FrameInfo; _Field_size_bytes_((MoveCount * sizeof(DXGI_OUTDUPL_MOVE_RECT)) + (DirtyCount * sizeof

问题 I'm using Windows Desktop Duplication API to make my own mirroring protocol. I have this piece of code : // Get new frame HRESULT hr = m_DeskDupl->AcquireNextFrame(500, &FrameInfo, &DesktopResource); if (hr == DXGI_ERROR_WAIT_TIMEOUT) { *Timeout = true; return DUPL_RETURN_SUCCESS; } Here is the FrameInfo structure : `typedef struct _FRAME_DATA { ID3D11Texture2D* Frame; DXGI_OUTDUPL_FRAME_INFO FrameInfo; _Field_size_bytes_((MoveCount * sizeof(DXGI_OUTDUPL_MOVE_RECT)) + (DirtyCount * sizeof

问题 I would like to remove the pixels that form a large cluster and keep only the small cluster to analyse (means get pixels number and locations). First I apply a filter to color in white all pixels that has a value lower to 0.66. Then I use the function clump() in R. The model works but I cannot remove only the large cluster. I do not understand how clump function works. Initial image: Results image: plot_r is the image where the pixels with value < 0.66 are changed to 0. plot_rc is the results

问题 I am trying to remove the black background from an image using OpenCV, but I am unable to remove the pixels to capture just the main imagery without the black background. Here is the code I am using, along with the original input image. import numpy as np import cv2 from matplotlib import pyplot as plt img = cv2.imread('C:\\Users\\mdl518\\Desktop\\input.png') mask = np.zeros(img.shape[:2],np.uint8) bgdModel = np.zeros((1,65),np.float64) fgdModel = np.zeros((1,65),np.float64) rect = (0,0,1035

问题 i want to creat an android app that shows all pixels of an image but when i zoom color of the corners of the pixels blend with other pixels around it i want pixels to show their color perfectly in their squares ( like pixel art or ms paint when you zoom it) i tried drawing a rectangle on canvas and drawing a bitmap 1×1 with color what i want but it blends here is a picture and code upper pic 4×4 what it creates lower pic what i want try{ //creating bitmap from other for background bt2 =