Technical Tips N Tricks

  Hello Readers, Today I will discuss Cache Memory and its importance. Importance • It Is Small faster Memory which stores copies of the data from the most frequently used by main memory location • Actually it is placed between Microprocessor & RAM. • It stored the address of memory location by which the microprocessor doesn’t need to cache its address again and again. Once Cache Memory Cached That Address then RAM and Microprocessor Directly Operate it rapidly. Uses • Due to cache memory, average latency memory is increases • and also It gives faster access to currently needed data • It also reduces the average time of accessing memory for RAM and Microprocessor • It is a special type of memory which is used to fast access to microprocessor Types: 1.  Level 1 (L1) cache or Primary Cache – L1 is the primary type cache memory. The Size of the L1 cache very small compared to others that are between 2 KB to 64 KB. 2.  Level 2 (L2) cache or Secondary Cache –  L2 is a...

Hello Guys, In this tutorial, I will discuss the color map in OpenCV. Color Map is used to show different color temperatures. And this can also be used to generate some cool image filters.  OpenCV comes with thirteen built-in color maps. So in this tutorial, I will show you how to use color maps.  Let’s get started List of Color Maps COLORMAP_AUTUMN COLORMAP_BONE COLORMAP_JET COLORMAP_WINTER COLORMAP_RAINBOW COLORMAP_OCEAN COLORMAP_SUMMER COLORMAP_SPRING COLORMAP_COOL COLORMAP_HSV COLORMAP_PINK COLORMAP_HOT COLORMAP_PARULA To apply color map first we need to convert an image to grayscale. So I will use  img = cv.imread("nature.jpg",cv.IMREAD_GRAYSCALE) If you are not aware of this function then please check my previous tutorial  http://techievaibhav.in/2019/01/10/reading-an-image-using-opencv/ To apply color maps, OpenCV comes with a function called applyColorMap() . This function takes two parameters. Gray Scale image Color Map Autumn Bone Cool Hot HSV Jet Ocean Parula Pink ...

In this tutorial, I will show you how to draw a circle in OpenCV. OpenCV comes with lots of built-in functions that make our life easier especially when we are working on image processing .  And there is a function called circle in OpenCV which is used to draw a circle. This function takes following parameters: 1. Image : Takes an image object 2. Center : Center point coordinates 3. Radius : Radius of the circle 4. Color : Takes color in BGR format 5. Thickness : By default set to 1 (optional) 6. Line Type : By default set to 8-connected.It can also be  LINE_AA  or  4-connected  (Optional) 7. Shift:  Shifts fractional bits in the point coordinates of center and radius (Optional) Especially when we are creating closed shapes. Thickness plays an important role. Here if the negative thickness is passed in this function or any other function which creates a closed shape(rectangle, polygon, etc). Then it creates a filled shape (filled with color). Negative Thickness Filled Circle Positive ...

Hello Guys, In this tutorial, I will show you how to draw a line in OpenCV. OpenCV comes with lots of built-in functions that make our life easier especially when we are working on image processing .  And there is a function called line  in OpenCV which is used to draw a line. This function takes the following parameters: 1. Image: Takes image object 2. Point 1: Point 1 X and Y  Coordinates 3. Point 2:  Point 2 X and Y  Coordinates 4. Color: Takes color in BGR format 5. Thickness: By default set to 1  (optional) 6. Line Type: By default set to 8-connected .It can also be LINE_AA  or 4-connected  (Optional) 7. Shift: Shifts fractional bits in the point coordinates (Optional) Well it is recommended to use line LINE_AA ( Anti Aliased) as line type. Line Without LINE_AA  (Anti Aliased) You can observe the right and left ends of the line . You will notice curves are showing in a zigzag pattern.  Line With LINE_AA  (Anti Aliased) Now in this image you can observe the curv...

Hi Guyz, In this tutorial, I will discuss the video properties and how to view the video properties of any video file using OpenCV.  A video file contains different types of properties like width, height, frames, etc. Sometimes it is required to take out these basic video details. In order to make this work, easy OpenCV comes with built-in properties to ease out the work for developers. video = cv.VideoCapture("video.mp4")video.get(0) OpenCV has a function named get(propId). Which takes property Identifier as an argument. There are total 22 property identifiers that OpenCV supports.  List of Property Identifiers One can also modify the properties of video file using set function. This function takes two arguments.  1. Index  2. Property Identifier In case, You want to modify the width and height of the video file. video.set(3,320) # Width video.set(4,480) # Height Program #import cv2 moduleimport cv2 as cv#This function shows the properties of a video filedef showProper...

Hello Guys, In this tutorial, I will show you how to play a video file using OpenCV. To play a video file or to stream a webcam OpenCV has a function named  VideoCapture.  This function takes only one argument. If you want to play the video you need to pass the file name with extension. Ex:  nature.mp4. Similarly, If you want to stream your webcam you need to pass a number or device index. Which simply means which webcam you want to access. Just in case, If you have more than one webcam. If you have only one webcam then you have to pass 0 or else if you have two web cameras then for accessing the second web camera you have to pass 1  and so on.  Once we have initialized the video object by calling the VideoCapture function. Then we will use an infinite while loop which will iterate till video.read() method returns true. read() function returns two parameters  1. Boolean – If True video still playing or False if the video is ended.  2. Frame – Here frame is simpl...

Hello Guys, In this article, I will discuss about how to write images in OpenCV. For writing images, Opencv has the function named “ imwrite “. This function takes two arguments.  1. Image name with extension  2. Image object This function returns a boolean . If it writes the file successfully then it returns True, otherwise False . # Import cv2 moduleimport cv2 as cv#reading an using imread function without passing any parameter# By default it loads the image in color formatcolored_image= cv.imread("nature.jpg") #imwrite returns True if it writes the file successfully otherwise #returns Falseresult = cv.imwrite("nature.png",colored_image)if result: png_img = cv.imread("nature.png") cv.imshow("Png Image",png_img) cv.waitKey(0) cv.destroyAllWindows()else: print("Error in writing file") Also don’t forget to check my previous OpenCV tutorials.  http://techievaibhav.in/category/programming/opencv/

Hello Guys, In this tutorial, I will discuss how to display an image using OpenCV.  OpenCV comes with the function named imshow  which is used to display images.  imshow function takes two arguments    1. Window name  2. Image object We can show show any number of windows . But the name of each window must be different. # Import cv2 moduleimport cv2 as cv#reading an using imread function without passing any parameter#by default it loads image in color format (BGR format)colored_image= cv.imread("nature.jpg") # loads image in gray formatgray_image= cv.imread("nature.jpg",cv.IMREAD_GRAYSCALE)#Code to display single imagecv.imshow("Colored Image",colored_image)#Passing zero means it will open till you press any key #to close the window. It takes time in milliseconds . So if 500 will be #passed then it will be opened for 500 ms and then it will be closed #automatically.cv.waitKey(0) # This is used to close all opened windowscv.destroyAllWindows() #code to dis...

Screen Resolution Increased screen resolution improves graphics quality by increasing the number of pixels displayed at once. This allows for sharper graphics details In most cases, the higher the screen resolution, the lower the frame rate for the game. 1920 x 1080 and 1024 X 768 are common screen resolutions for games. Color Depth Many games give the option to run in either 16-bit or 32-bit colour depth. This refers to the amount of video memory that is required for each screen pixel. 32-bit colour depth gives a larger range of colours to use, resulting in higher quality rendering. Due to the increased video memory bandwidth that is needed, 32-bit colour will reduce the frame rate for the game. With some games, this can result in choppier performance.Some games also allow setting the colour depth of textures. 32-bit colour can dramatically improve the appearance of textures like dithering and banding. A small performance decrease may be seen with 32-bit colour textures Texture Detail...

1. Connect your pen drive to your pc [pen drive should be atleast 1 gb or if you having 4 gb then its better] 2. Allow pc what he is supposed to do,let system to detect pen drive. 3. After your pc finished with his detection work,you hav to do some lottle work 4. Right click on the My Computer and select the properties 5. Goto advanced and then performance setting then advanced then change. 6. Select pen drive and click on custom size ” Check the value of space available ” 7. Enter the same in the Initial and the Max columns ” You just used the memory of the PenDrive as a Virtual Memory ” 8-Now restart your pc and enjoy your fast and super system

Difference between Core i3, Core i5, and Core i7 Core i3: * Entry level processor. * 6 Cores * 4 Threads * Hyper-Threading (efficient use of processor resources) * 8 MB Cache * 14 nm Lithography (less heat and energy) Core i5: * Mid-range processor. * 6 Cores * 6 Threads * Turbo Boost * Hyper-Threading (efficient use of processor resources) * 9 MB Cache * 14 nm Lithography (less heat and energy) Core i7: * High-end processor. * 8 Cores * 8 Threads * Turbo Boost * Hyper-Threading (efficient use of processor resources) * 4-8 MB Cache * 14 nm Lithography (less heat and energy) Core i9: * High-end processor. * 10-18 Cores * 20-36 Threads * Turbo Boost * Hyper-Threading (efficient use of processor resources) * 16-24 MB Cache * 14 nm Lithography (less heat and energy)

Hi Guyz, In this tutorial, I will discuss how to read an image in OpenCV using python . OpenCV has the function called imread for reading an image. This imread function reads the image in BGR format. BGR stands for Blue Green Red. This function takes two argument. Image path Flag  There are three types of flags which this function takes. IMREAD_COLOR  IMREAD_GRAYSCALE IMREAD_UNCHANGED IMREAD_COLOR : This is the default flag which this function takes automatically. So if you want to read an image in the color format then you don’t have pass any flag. Or you can also pass 0 .  IMREAD_GRAYSCALE : When using this flag it read an image in grayscale format. Or you can also pass  1.   IMREAD_UNCHANGED : Loads an image with transparency (Alpha channel). Or you can also pass -1 . import cv2 as cv """ Reading Colored Image """colored_image= cv.imread("nature.jpg") #Same statement can also be written as colored_image= cv.imread("nature.jpg",cv...

SmackDown Here Comes The Pain Configuration: GRAPHICS-GSDX 1600(MSVC 15.00 SSSE3)0.1.15 CONTROLLERS-LILLY PAD 0.10.0 CDVDROM-EPP POLLING CDVD DRIVER 0.4.0 USB-USB NULL DRIVER 0.6.0 SOUND-SPU2-X1.1.0 SECOND CONTROLLER-LILLY PAD 0.10.0 DEV9-DEV9NULL DRIVER-0.4.0 FIREWIRE-FWNULL DRIVER 0.5.0 BIOS-EUROPE V01.60(04/10/2001)CONSOLE SYSTEM REQUIREMENTS FOR PCSX2 – MINIMUM – * Windows/Linux OS * CPU: Any that supports SSE2 (Pentium 4 and up, Athlon64 and up) * GPU: Any that supports Pixel Shader model 2.0, except Nvidia FX series (broken SM2.0, too slow anyway) * 512mb RAM (note Vista needs at least 2gb to run reliably) RECOMMENDED – * Windows Vista 32bit/64bit with the latest DirectX * CPU: Intel Core 2 Duo @ 3.2ghz or better * GPU: 8600gt or better (for Direct3D10 support) * RAM: 1gb on Linux/Windows XP, 2gb or more on Vista MY SYSTEM REQUIREMENTS WINDOWS XP SP3 PENTIUM DUAL CORE 2.6GHZ (E5300) 2GB RAM ZOTAC 8400GS 512MB DIRECT-X 9.0 This game is running smoothly on my PC an...

Hello Readers, Today this article is about top 5 graphics card which you can buy to play new high graphics game on your system. 1. Zotac Nvidia GT 1030 2GB GDDR5: Specs: GPU: GeForce® GT 1030 CUDA cores: 384 Video Memory: 2GB GDDR5 Memory Bus: 64-bit Memory Clock: 6.0 GHz PCI Express: PCIE 3.0 Display Outputs: VGA ,HDMI 2.0b Recommended Power Supply: 300W DirectX: 12 OpenGL: 4.5 Supported OS: Windows 10 / 8 / 7 (32/64-bit) Buy Now 2.Gigabyte Radeon RX 550 D5 2GB Specs: Graphics Processing Radeon RX550 Core Clock OC mode: 1195 MHz Gaming mode: 1183 MHz (Reference clock: 1183 MHz) Process Technology 14 nm Memory Clock 7000 MHz Memory Size 2 GB Memory Type GDDR5 Memory Bus 128 bit Card Bus PCI-E 3.0 x 8 DirectX 12 OpenGL 4.5 Recommended PSU 400W Output Dual-link DVI-D *1 HDMI-2.0b*1 (Max Resolution: 4096×2160 @60 Hz) Display Port-1.4 *1 (Max Resolution: 7680×4320 @60 Hz) 3.Gigabyte GeForce GV-N710D3-2GL 2GB Specs: Graphics Processing GeForce® GT 710 Core Clock 954 MHz (Standard: ...