histogram ggplot2

Largest Rectangle in a histogramTime limit:2000/1000 MS (java/others) Memory limit:65536/32768 K (java/others)Total submission (s): 12554 Accepted Submission (s): 3509Problem Descriptiona Histogram is a polygon composed of a sequence for rectangles aligned at a common base line. The rectangles has equal widths but could have different heights. For example, the figure on the left shows the histogram that c

E-largest Rectangle in a histogramTime limit:1000MS Memory Limit:32768KB 64bit IO Format:%i64d %i6 4u Submit Status Practice HDU 1506Appoint Description:DescriptionA histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles has equal widths but could have different heights. For example, the figure on the left shows the histogram that consists of rectangles

Largest rectangle in a Histogram Time Limit: 2000/1000 MS (Java/others) memory limit: 65536/32768 K (Java/Others)Total submission (s): 11248 accepted submission (s): 3088 Problem descriptiona histogram is a polygon composed of a sequence of rectangles aligned at a common base line. the rectangles have equal widths but may have different heights. for example, the figure on the left shows the

As we all know, GPU acceleration technology has a great impact on image processing, in the previous blog in contrast to verify the GPU acceleration technology for image filtering efficiency. But GPU technology is not omnipotent, this paper compares the efficiency of GPU computing histogram is not the traditional method of computing efficiency. The table below is the comparison result, the time is averaged by running 20 times, and the corresponding com

Title Link:HDU-1506a histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles has equal widths but could have different heights. For example, the figure on the left shows the histogram that consists of rectangles with the Heights 2, 1, 4, 5, 1, 3, 3, Measured in units where 1 is the width of the rectangles:Usually, histograms is used to represent discrete dis

Hog (histogram of Oriented Gradient) Direction gradient histogram, mainly used to extract image features, the most common is to use SVM for pedestrian detection. The algorithm flow chart is as follows (in this paper ): Next I will repeat it with my own program: 1. Gamma Correction for the original image, IMG = SQRT (IMG ); 2. Find the vertical edge, horizontal edge, edge strength, and edge slope of the ima

largest Rectangle in a histogram http://acm.hdu.edu.cn/showproblem.php?pid=1506 http://poj.org/problem?id=2559Time limit:2000/1000 MS (java/others) Memory limit:65536/32768 K (java/others) Problem Description A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles has equal widths but could have different heights. For example, the figure on the left show

Nine Chapters count judges Net-original websitehttp://www.jiuzhang.com/problem/43/TopicsA histogram () is given to find the largest matrix area included in the given histogram. The histogram can be represented by an array of integers, such as [2, 1, 5, 6, 2, 3]. Each straight block has a width of 1. The largest matrix area contained in is 10.AnswerIf for each str

Topic descriptionThere is a histogram, represented by an array of integers, where the width of each column is 1, and the maximum rectangular area contained by the given histogram is obtained. For example, for the histogram [2,7,9,4], the maximum rectangle it contains is 14 (that is, the 7x2 rectangle that [7,9] includes).Given a

A few days ago to see an algorithm topic, it looks very simple, that is, there is a rectangle composed of 0 and 1, and then find the rectangle of all elements are 1 of the largest rectangular rectangle, it seems quite simple at first, but I think half a day did not think out. Search on the Internet to find that the topic is quite famous, many people have written articles discussed, a very good solution is to borrow a histogram to find the largest area

Error | Problem Photoshop cs Some version of the histogram of some errors display problems, please refer to the following methods to check whether there is this error and repair, traditional Chinese and English version does not have this problem. 1, open the sample image file, bring up the Histogram palette "window > Histogram", click the Round triangle button, s

Image histogram describes the statistical characteristics of each gray level of the image, he represents the image of each gray level and the gray level of the corresponding relationship between the frequency, because the gray level is not continuous, natural, gray histogram is a discrete function. The horizontal axis is the gray level G, the ordinate is Ng, if the total pixel is N, the gray level is l,pg=n

Learning an example on opencv to construct a histogram of the color saturation based on the input image # Include Opencv construction Histogram

The histogram of an image not only represents the distribution of the intensity value (that is, the pixel value), but also the gradient and Motion Direction of the pixel. Dims: indicates the number of parameters to be processed, such as the intensity value, gradient value, and direction value. This article only calculates the histogram of the pixel intensity value, so dim = 1. Bins: number of sub-split boxe

/*bkjia Essence: PHP generated histogram */ function CreateImage ($data, $twidth, $tspace, $height) { $dataName = Array (); $dataValue = Array (); $i = 0; $j = 0; $k = 0; $num = sizeof ($DATA); foreach ($data as $key = = $val) { $dataName [] = $key; $dataValue [] = $val; } $maxnum = max ($data); $width = ($twidth + $tspace) * $num + 4;//images width $im = imagecreate ($width + +, $height +20); $lineColor = Imagecolorallocate ($im, 12,12,12); $bgCo

For a function that uses PHP to generate histogram quickly, it is relatively slow to complete a simple function. For a function that uses PHP to generate histogram quickly, it is relatively slow to complete a simple function. As a beginner, will only manipulate the CSS to generate a simple bar chart, but my function in the data is more than 25,000 times super slow, more than 10,000 times the time to genera

POJ 2136 Vertical Histogram prints special graphics, pojhistogram Print the output format as required. These are some interesting questions. The question itself is not difficult. The difficulty is to test how to program elegantly. It is mainly to test the basic programming skills. In addition, it seems that the test system is not very strict and does not judge the redundant spaces behind it. According to the requirements of the question, we need to st

Hdu 1507 Largest Rectangle in a Histogram Record the dynamic planning of dpl, dpr, distinguish the left side of the record I is larger than that of I, and then (dpr [I]-dpl [I] + 1) * h [I] To Get The Length Dynamic transfer equation while (temp> 1 h [temp-1]> = h [I]) temp = dpl [temp-1] /*************************************** * *********************************> File Name: hdu1506.cpp> Author: yang> Mail: 826123027@qq.com> Created Time: sunday, A

The principle of the algorithm is as follows: Click Open Link The general principle is to divide the color information of each component of R, G, and B into N intervals. Example: 4x4x4 Red 0-63 127-64 128-191 192-255 Blue 0-63 43 78 18 0 127-64 45 67 33 2 128-191 127 58 25 8 192-255 140 47 47 13 Calculate the number of workers in each interval: ... Matlab code implementa

1506 question: give you a continuous histogram (the bottom edge length is 1) to find the continuous matrix area. Expand each histogram to the left to the right. # Include 1505 question: calculate the maximum zero (f) matrix. The 1506 enhanced version converts two dimensions into the largest area composed of the bottom of each row. #include