image recognizer

OIn Digital image processing, there are specific processing algorithms for different image formats. So, before we do the image processing, we need to think about the format of the image we want to design and implementation of the algorithm. Based on this requirement, this paper uses the

Time 2013-09-04 17:05:05 iteye-blog original http://hw19886200.iteye.com/blog/1936487 In the field of Image de-fog, few people do not know the "single image Haze removal Using Dark Channel Prior" article, which is the 2009 CVPR best paper. Dr. He Keming, who graduated from Tsinghua University in 2007 and graduated from the Chinese University of Hong Kong in 2011, is a deep-rooted, lamented the level of some

Tags: resid code test different Gauss Line name blog TPSThis paper summarizes the previous articles and realizes a small image retrieval application.A small image retrieval application can be divided into two parts: Train, build the feature database of the image set. Retrieval, retrieving, given image, ret

The onerror event of the image object is used to determine whether to change the SRC of the image object to the URL of the default image. [Ctrl + A select all Note: If you need to introduce external JS, You need to refresh it to execute] The following is a JS judgmentUse JavaScript to determine whether a specified

Installing Linux on a CD is easy, follow the prompts step by step. If there is no optical drive, you have to try to use hard disk or USB stick installed. first of all, how to start the Linux installation program with a USB stick:1. Copy the ISO image file to the USB stick and unzip it to the root of the USB stick. Copy the Vmlinuz, initrd.img from the Isolinux directory to the root directory of the USB stick and the C packing directory. 2. Boot the Li

This is a simple algorithm. It is a global binary algorithm with fast execution speed. The algorithm process is described as follows: Perform the following processing for each pixel: 1. Calculate the horizontal and vertical gradient of the current pixel. (Two gradients are calculated | I (x + 1, Y)-I (X-1, Y) | and | I (X, Y + 1)-I (X, y-1) | ); 2. Take the maximum values of the two gradients as the weight. (Weight is calculated as maximum of two gradients ); 3. Update the sum of weights. (Sum o

PHP image operation-generating image verification code and php image Verification Code A simple verification code is actually a few characters output in the image, which can be achieved through the imagestring function. However, in terms of processing, in order to make the verification code more secure and Prevent Auto

points to the bottom of the stack, and (top, free_space) points to the top of the stack. Stack top can be saved through cvsavemstoragepos, restored to point through cvrestoremstoragepos, and reset through cvclearstorage. Cvpyrsegmentation PyrsegmentationUse pyramid to achieve Image Segmentation Void cvpyrsegmentation (iplimage * SRC, iplimage * DST,Cvmemstorage * storage, cvseq ** comp,Int level, double threshold1, double threshold2 );SRCInput image

Python image grayscale transformation and image array manipulationMingchaosun font: [Increase decrease] Type: Reprint time: 2016-01-27 I want to commentThis article mainly describes the Python image grayscale transformation and image array operation related data, the need for friends can refer to the followingUse Pytho

First, add // CodeAs follows: // Protected system. Web. UI. htmlcontrols. htmlinputfile picfile; // Check and upload private bool checkpic () { httppostedfile PIC = picfile. postedfile; // check the extension string picext = system. io. path. getextension (picfile. postedfile. filename ). tolower (); If (picext = ". jpg "| picext = ". GIF "| picext =" BMP "| picext =" PNG ") {}{ kit. alert (this. page, "the image format is incorrect. Con

In the second lecture, I introduced how to operate each pixel. This operation pixel is used to complete simple image processing operations. First, we start by adding salt and pepper noise to the image. Salt and pepper noise is actually to make some random pixels of the image black (255) or white (0 ): #include In the main program, the main program uses medium fi

[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform] [Procedural notes] Mainly for the Magnifier class, the main methods are: Init: How to Run Start: The event handling that the mouse moves into the div Move: The event handling that the mouse moves in the DIV End: Event handling after mouse move out [Procedure Introduction] Main thinking: When the mouse moved into the picture, the magnification layer of the div appears, and then according to the mouse

Upload image preview JS script Input file image preview implementation example, js image Preview When working on a project in Shenzhen, a user needs to upload the Avatar preview function! I found a lot on the Internet, but I am not satisfied with it. Either flash, or the path of the image returned after Ajax upload, or

The first method: Gaussian template The following text copy of the Let me give you an example of what smoothing is (smoothing), as shown in the following two images: As you can see, Figure 3.2 is softer (and more obscure) than figure 3.1. Does it feel magical. In fact, the implementation is very simple. We add the grayscale of each point in the original image and the gray level of the eight dots around it, then divide by 9, as the grayscale of the c

Android client uploads images to the server and uses XML to transmit base64-encoded ImagesI use the httpclient of Android to send post requests. I also want to use the post method to send data. However, the data is saved during base64 decoding on the server, I did not find the cause, so I did not write it out. The reason why a POST request is sent is that the amount of data that can be transmitted at a time is large because the size of the image after

It feels good to see an image Switching Effect of alibaba. But there are a lot of code. If you look dizzy, come on your own. With experience in performing image slide display, it is much easier to do this. It feels good to see an image Switching Effect of alibaba. But there are a lot of code. If you look dizzy, come on your own. With experience in performing

First, explain the so-called black and white images. In fact, it should be called a 256-level grayscale image more accurately. When R = G = B of A color point, it is called "gray ". The value range of RGB is [0,255], so there are only 256 possibilities. Therefore, the principle of converting a color image into a black image or a black

Several conceptual image Digitization 1 sampling 2 quantization 3 Digital Image Properties 31 Digital Image measurement and topological sequence 2 histogram 3 entropy 4 Image visual perception 5 image quality 6 image noise color

function getimg ($url, $filename) { if ($url = = ") return false; Turn on output control buffering Ob_start (); Reads the URL picture file and writes to the output cache ReadFile ($url); Returns the contents of the output buffer $img = Ob_get_contents (); Empty the contents of the output buffer Ob_end_clean (); Gets the content length obtained from the cache $size = strlen ($img); Picture Catalogue $imgdir = './'; $fp = @fopen ($imdir. $filename, ' a

This article is a detailed introduction of the PHP implementation of the image upload, clipping function of the specific code for your reference, the specific content as follows The above is the whole content of this article, I hope that you learn PHP programming help. The above describes the PHP implementation of the image upload, clipping, including the image