ppm

Rotate Image .pbm Haskell

由 别来无恙 提交于 2019-12-03 00:22:21
问题 i need help about a rotation or spin matrix in haskell i have a list of list, of a data type RGB: data RGBdata= RGB Int Int Int m = [[(RGB 0 255 255),(RGB 255 0 0)],[(RGB 255 255 255),(RGB 255 0 0)]] to be seen better i have a matrix 2x2: m = [[(RGB 1 2 3),(RGB 4 5 6)], [(RGB 7 8 9),(RGB 1 5 9)]] and i need 90° rotation, i mean something like: m = [[(RGB 7 8 9),(RGB 1 2 3)] [(RGB 1 5 9),(RGB 4 5 6)]] Extends my explication, i have 2 data type: data RGBdata= RGB Int Int Int data PBMfile= PBM

Perl PPM Packages…Cannot connect to http://theoryx5.uwinnipeg.ca/ppms/package.xml [duplicate]

由 只愿长相守 提交于 2019-12-02 18:50:07
问题 This question already has an answer here : Why do I get “500 can't connect to theoryx5.uwinnipeg.ca :: 80 (bad hostname)” when I try to install modules? (1 answer) Closed 5 years ago . I am using Perl to extract pubmed abstracts. I want to use XML::LibXML but when i tried to install using ppm install I got the following error Can't connect to theoryx5.uwinnipeg.ca/ppms/package bad hostname I tried to open through browser but this page cannot load. Can anybody please help 回答1: This repository

Read/Write to PPM Image File C++

由 不羁的心 提交于 2019-12-01 05:15:35
问题 Trying to read and write to/from a PPM Image file (.ppm) in the only way I know how: std::istream& operator >>(std::istream &inputStream, PPMObject &other) { inputStream.seekg(0, ios::end); int size = inputStream.tellg(); inputStream.seekg(0, ios::beg); other.m_Ptr = new char[size]; while (inputStream >> other.m_Ptr >> other.width >> other.height >> other.maxColVal) { other.magicNum = (string) other.m_Ptr; } return inputStream; } My values correspond to the actual file. So I cheerfully

Converting a PPM from RGB to HSL in C [closed]

由 血红的双手。 提交于 2019-11-28 14:17:44
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago . I need a help about histogram equalization in RGB image files for my academic coursework. I checked my previous code samples about histogram equalization and I did not find any clue about this issue. I've never practiced a histogram equalization example which is RGB image. The image is PPM file. So

read PPM file and store it in an array; coded with C

由 别等时光非礼了梦想. 提交于 2019-11-27 11:59:14
I need to read a PPM file and store it in an array written in C. Can anybody help me out doing this? Thanks a lot. rpf The following code shows how to read, change the pixel colour and write an image in PPM format. I hope it helps. #include<stdio.h> #include<stdlib.h> typedef struct { unsigned char red,green,blue; } PPMPixel; typedef struct { int x, y; PPMPixel *data; } PPMImage; #define CREATOR "RPFELGUEIRAS" #define RGB_COMPONENT_COLOR 255 static PPMImage *readPPM(const char *filename) { char buff[16]; PPMImage *img; FILE *fp; int c, rgb_comp_color; //open PPM file for reading fp = fopen
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