A method of keeping the original scale of OpenGL map

  For example, I created a full screen texture vertex, but the picture does not necessarily conform to the screen scale. In this way, once the texture map is pasted, it will not conform to the picture scale as soon as it is stretched, which will be more ugly. So what temporary transformation to the vertex can maintain the scale of the rend ...

Added by Begby on Tue, 07 Dec 2021 16:28:39 +0200

DICOM image display - DCMTK - three conversions of pixel data

   to display medical images in DICOM format, the original image data must undergo a series of transformations to obtain data that can be directly displayed on the display device (called P Values). DICOM medical image display needs three conversion processes: Modality LUT, VOI LUT and Presentation LUT, and the final output P Values is ...

Added by Francois on Mon, 06 Dec 2021 03:40:57 +0200

Image bit plane information embedding -- the last name and first name are embedded in bit plane 0 and bit plane 1 respectively

Plane introduction For the gray-scale image, each pixel value of the gray-scale image is 0-255, which exactly corresponds to the eight bit binary. For example, the binary representation of 255 is 11111111. The 0-bit plane refers to a binary graph composed of the first binary bit of all pixel values, and the first bit plane refers to a binary g ...

Added by neave on Sun, 05 Dec 2021 13:14:44 +0200

Digital image histogram equalization python

Histogram equalization Let's take a look at the renderings: digital image I think everyone should have some concepts about the concept of digital image. In the past, photos were exposed by camera using film. The photosensitive material on the film will form an exposure point when light shines on it. After an image is mapped in, a pictur ...

Added by Hooker on Tue, 30 Nov 2021 23:36:41 +0200

opencv bank card number recognition project based on template matching

Recently, in mending opencv, I started the actual combat of this small project under the condition of less serious learning in the early stage, and identified the bank card number based on template matching. Overall idea: First of all, for this project, we need to consider how to make the computer successfully identify the card number of the ...

Added by oocuz on Fri, 26 Nov 2021 14:46:29 +0200

Python computer vision -- face recognition in images and videos

I will share some of the articles and papers I refer to - the links are posted in the original text. I upload the papers to the resources, and you can download them for free. If you can't find the papers in the resource area that day, wait. They may be under review, and you can download them after review. Let's study together and make progress ...

Added by TylerL on Fri, 26 Nov 2021 00:05:28 +0200

OpenGL uses Shader to realize RGBA to I420 (with project source code)

Previously, I wrote two articles on shader to realize RGBA to YUV:OpenGL uses shader to convert RGBA to YUYVOpenGL uses shader to convert RGBA to NV21Some links about YUV images are also posted here for unfamiliar students to consult.Master the basic processing of YUV imageShader realizes RGBA to I420Images in I420 format are common in video de ...

Added by ironman on Mon, 22 Nov 2021 11:58:41 +0200

Python white OpenCV learning lesson from scratch - 6. Gray transformation and histogram processing

OpenCV learning lesson from scratch - 6. Gray transformation and histogram processing This series is for Python Xiaobai and explains the actual combat of OpenCV project from scratch. The image processing method in spatial domain directly processes the pixels of the image. The image processing technology in spatial domain mainly includes gray ...

Added by fireMind on Fri, 19 Nov 2021 09:18:57 +0200

Python computer vision -- image special effect processing

I will share some of the articles and papers I refer to - the links are posted in the original text. I upload the papers to the resources, and you can download them for free. If you can't find the papers in the resource area that day, wait. They may be under review, and you can download them after review. Let's study together and make progress ...

Added by akreation on Thu, 18 Nov 2021 23:12:40 +0200

C# and Halcon jointly make multifunctional Halcon form

1. Form function ①Displays the image to scale without filling the extrusion ②You can drag the mouse to move the image and zoom the scroll wheel ③Can display image cross auxiliary display ④It can display the coordinates of the mouse on the form and the gray value of the image ⑤You can save the image displayed in the current form ⑥You can ta ...

Added by leatherback on Wed, 17 Nov 2021 09:19:32 +0200