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  • detect the most used colour in an image using python

    - by sree01
    Hi, I want to find the most used colour in an image using python. for example detect the colour of the object in the following image http://www.shopcrazy.com.ph/wp-content/images/2007/02/shiny-bags-01.jpg. how to detect the base colour from the RGB codes(example - red in the above image).

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  • How to Create VBA Add-In with Shared Codes for All Excels?

    - by StanFish
    I'm writing VBA codes for multiple Excel spreadsheets, which will be shared with others from time to time. At some point I find there are lots of duplications in my works. So I want to find a way to share codes in a sort of Excel add-in, like the .xla file. But when I tried to save the Excel file containing shared codes as .xla file, I got some problems: The file cannot be edit anymore after I save it in the default add-in folder If I move the .xls file to a folder other than the add-in folder, and open it directly - I cannot use its classes - which creates problems for sharing the codes Any ideas to create add-ins in a flexible and powerful way please? Thanks a lot for the help

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  • Changing RGB color image to Grayscale image using Objective C

    - by user567167
    I was developing a application that changes color image to gray image. However, some how the picture comes out wrong. I dont know what is wrong with the code. maybe the parameter that i put in is wrong please help. UIImage *c = [UIImage imageNamed:@"downRed.png"]; CGImageRef cRef = CGImageRetain(c.CGImage); NSData* pixelData = (NSData*) CGDataProviderCopyData(CGImageGetDataProvider(cRef)); size_t w = CGImageGetWidth(cRef); size_t h = CGImageGetHeight(cRef); unsigned char* pixelBytes = (unsigned char *)[pixelData bytes]; unsigned char* greyPixelData = (unsigned char*) malloc(w*h); for (int y = 0; y < h; y++) { for(int x = 0; x < w; x++){ int iter = 4*(w*y+x); int red = pixe lBytes[iter]; int green = pixelBytes[iter+1]; int blue = pixelBytes[iter+2]; greyPixelData[w*y+x] = (unsigned char)(red*0.3 + green*0.59+ blue*0.11); int value = greyPixelData[w*y+x]; } } CFDataRef imgData = CFDataCreate(NULL, greyPixelData, w*h); CGDataProviderRef imgDataProvider = CGDataProviderCreateWithCFData(imgData); size_t width = CGImageGetWidth(cRef); size_t height = CGImageGetHeight(cRef); size_t bitsPerComponent = 8; size_t bitsPerPixel = 8; size_t bytesPerRow = CGImageGetWidth(cRef); CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray(); CGBitmapInfo info = kCGImageAlphaNone; CGFloat *decode = NULL; BOOL shouldInteroplate = NO; CGColorRenderingIntent intent = kCGRenderingIntentDefault; CGDataProviderRelease(imgDataProvider); CGImageRef throughCGImage = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpace, info, imgDataProvider, decode, shouldInteroplate, intent); UIImage* newImage = [UIImage imageWithCGImage:throughCGImage]; CGImageRelease(throughCGImage); newImageView.image = newImage;

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  • Can we find out the difference between 2 RGb colors to find out a 3rd color?

    - by AK
    2 colors are mixed together. If i have the RGB for the resultant color and RGB for one of the colors mixed, then somehow i could calculate the 2nd color? I will try to explain visually what i am trying to say. Here is a flickr link http://www.flickr.com/photos/48150615@N08/4407414157 I know that the circle in the middle has an opacity of 20% Is there any way to know the color value of the circle so that i can deduct that to get the same color value as the background color.

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  • C# Problem with getPixel & setting RTF text colour accordingly

    - by m3n
    Heyo, I'm messing with converting images to ASCII ones. For this I load the image, use getPixel() on each pixel, then change insert a character with that colour into a richTextBox. Bitmap bmBild = new Bitmap(openFileDialog1.FileName.ToString()); // valid image int x = 0, y = 0; for (int i = 0; i <= (bmBild.Width * bmBild.Height - bmBild.Height); i++) { // Ändra text här richTextBox1.Text += "x"; richTextBox1.Select(i, 1); if (bmBild.GetPixel(x, y).IsKnownColor) { richTextBox1.SelectionColor = bmBild.GetPixel(x, y); } else { richTextBox1.SelectionColor = Color.Red; } if (x >= (bmBild.Width -1)) { x = 0; y++; richTextBox1.Text += "\n"; } x++; } GetPixel does return the correct colour, but the text only end up black. If I change this richTextBox1.SelectionColor = bmBild.GetPixel(x, y); to this richTextBox1.SelectionColor = Color.Red; It works fine. Why am I not getting the right colours? (I know it doesn't do the new lines properly, but I thought I'd get to the bottom of this issue first.) Thanks

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  • When dynamically adding nodes to DOM how to make browser repaint the background to avoid artefacts?

    - by Tim
    Given nested DIVs: <div id="outer" <div id = "inner" > <div id = "injectedcontent"> nodes are added to this DIV with </div> </div> </div> and this css: #outer {background-color: lightgrey; padding: 2em; width: 100%; height: 100%} #inner {background-color: white; width: 100%; height: 100%} and content injected in this manner: function injectContent(titleDivId, content){ var resultscontainer=document.getElementById('injectedcontent'); var titleDiv = document.getElementById(titleDivId); if (titleDiv == null) { titleDiv=document.createElement('div'); titleDiv.id=titleDivId; titleDiv.innerHTML += content; resultscontainer.appendChild(titleDiv); } else { titleDiv.innerHTML += content; } } the browsers do not redraw the outer DIV's background to accommodate the injected content. When I scroll the page (lots of text gets injected into the page -- it is a full-text search app) the lightgray background is painted right across the text, as shown in the attached image. Is there a way to cause the browser to recalculate page-depth after injecting content? Or is this problem related to this line: titleDiv.innerHTML += content; Is it better to add titleDiv's content a node at a time? I've recently seen respected people using innerHTML in this way, although postings from from several years ago discourage use of innerHTML. 1:

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  • Pulling a value from one jQuery function into another

    - by Travis
    I'm trying to take the hex value chosen from a jQuery colorpicker plugin, and store it as a cookie using the jQuery cookie plugin. I just don't know the appropriate way to tie the two together (new to js and jQuery). Here's my colorpicker function: $('#colorSelector').ColorPicker({ color: '#ffffff', onShow: function (colpkr) { $(colpkr).fadeIn(500); return false; }, onHide: function (colpkr) { $(colpkr).fadeOut(500); return false; }, onChange: function (hsb, hex, rgb) { $('#colorSelector div, .preview-image, .cover ').css('backgroundColor', '#' + hex); $('body').css('backgroundColor', '#' + hex); $.cookie('bgColor', 'picker'); return false; } }); And here's my cookie function as is: var bgColor = $.cookie('bgColor'); if (bgColor == 'picker') { $('#colorSelector div, .preview-image, .cover ').css('backgroundColor', '#' + hex); }; I can set and store the cookie value as a standard css background-color, but can't figure out how to pull the "'backgroundColor', '#' + hex" value into the cookie function.

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  • CSS - How to create a table cell with a two-colour background?

    - by Chris
    Hi, I'm trying to create an HTML table cell with a two-tone background; so I have normal text on a background which is yellow on the left, and green on the right. The closest I've got so far is as follows. The background is correctly half-and-half, but the content text is displaced below it. <html> <head> <style type='text/css'> td.green { background-color: green; padding: 0px; margin: 0px; height:100%; text-align:center } div.yellow { position:relative; width: 50%; height: 100%; background-color:yellow } </style> </head> <body style="width: 100%"> <table style="width: 25%"> <tr style="padding: 0px; margin: 0px"> <td class="green"> <div class="yellow"></div> <div class="content">Hello</div> </td> </tr> </table> </body> </html> How can I fix this up?

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  • How to control div on hover:?

    - by AAA
    I found a way to change the background color of a menu option upon hover. However, when you hover an option, it takes up some wide space that moves all the other options to the right, its sort of annoying, i want to maintain a consistent space, so if i hover, only the color should change, not the option moving to the right. Sort of the way facebook has its menu options. Below is the code: <div id="menu"> <a href="/hello" id="option">home</a> <a href="/hello" id="option">profile</a> <a href="/hello" id="option">account</a> <a href="/hello" id="option">settings</a> <a href="/hello" id="option">extra</a> <a href="/hello" id="option">logout</a> </div> CSS: div#menu { margin-left: 630px; margin-top:-20px; } option { margin-left: 20px; } #option:hover{ background: #3F2327; padding: 10px; }

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  • How to calibrate monitor colors to use 3D glasses?

    - by GetFree
    I have a pair of red/cyan 3D glasses and when I use them to view youtube's 3D videos or anaglyph images they dont seem to work properly. The two images are not filtered properly by each colored lens. So I guess the problem is my monitor not showing the exact colors needed for my glasses to work. Is there any way to customize/calibrate the monitor's colors for a specific pair of 3D glasses? PS: I also have green/magenta and amber/blue glasses, but the same problem happens.

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  • Colour Issues in OSX Terminal ssh'd to Ubuntu terminal

    - by devians
    In the OSX terminal, I'm having some colour issues. If i am working locally, there are no colours. If i ssh into my opensolaris machine (using screen inside ssh) there are no colours. If i then ssh into my ubuntu virtualmachine, and say, vim edit a file, the colours are completely broken. On quitting vim, it then keeps the broken colours and applies them to everything until i force a terminal bell. I assume this is a misconfiguration of the ubuntu machines colours, or a mismatching of terminal emulators. What is the best fix in this instance.

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  • Colour Issues in OS X Terminal ssh'd to Ubuntu terminal

    - by devians
    In the OS X Terminal.app, I'm having some colour issues. If I am working locally, there are no colours. If I ssh into my opensolaris machine (using screen inside ssh) there are no colours. If I then ssh into my ubuntu virtualmachine, and say, vim edit a file, the colours are completely broken. On quitting vim, it then keeps the broken colours and applies them to everything until I force a terminal bell. I assume this is a misconfiguration of the ubuntu machines colours, or a mismatching of terminal emulators. What is the best fix in this instance.

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  • Colors differ in the dual monitor

    - by becomingGuru
    I use a dual monitor. The colors appear entirely different on the new monitor than they do on my laptop. When you are selecting colors etc, to be included in a website design, it totally freaks me out. Is there no software solution that finds how the settings of one of the monitor is and puts that to the second one? Otherwise what all settings do I need to change manually on the second monitor to make it appear as it does on the laptop? Thanks in advance.

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  • Colorize Monitoring of Logs

    - by Ian
    I sometimes monitor apache and php error logs using tail under FreeBSD. Is there any way to get colorized output, either using tail or some other command line app? Alternatively, what is your favorite way to monitor the various web-related logs in realtime?

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  • Advice for printing a colored page

    - by eSKay
    If I need to print a colored document on a black and white printer, then which one of these options do you think is better: desaturating the document first and then sending it to printer giving the print command on the colored document only (trusting the printer for the job) I know most of us use the second option. I want to know if there is any possible advantage of using the first option?

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  • 48-bit colours?

    - by grawity
    Quite often, especially in X11-related things (X resources, Roxterm themes, etc) I see colours specified as 48-byte numbers: #2e2e34343636, #cccc00000000 instead of the usual 24-bit #2e3436 and #cc0000. What are the extra bits used for?

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  • Immediately tell which output was sent to stderr

    - by Clinton Blackmore
    When automating a task, it is sensible to test it first manually. It would be helpful, though, if any data going to stderr was immediately recognizeable as such, and distinguishable from the data going to stdout, and to have all the output together so it is obvious what the sequence of events is. One last touch that would be nice is if, at program exit, it printed its return code. All of these things would aid in automating. Yes, I can echo the return code when a program finishes, and yes, I can redirect stdout and stderr; what I'd really like it some shell, script, or easy-to-use redirector that shows stdout in black, shows stderr interleaved with it in red, and prints the exit code at the end. Is there such a beast? [If it matters, I'm using Bash 3.2 on Mac OS X]. Update: Sorry it has been months since I've looked at this. I've come up with a simple test script: #!/usr/bin/env python import sys print "this is stdout" print >> sys.stderr, "this is stderr" print "this is stdout again" In my testing (and probably due to the way things are buffered), rse and hilite display everything from stdout and then everything from stderr. The fifo method gets the order right but appears to colourize everything following the stderr line. ind complained about my stdin and stderr lines, and then put the output from stderr last. Most of these solutions are workable, as it is not atypical for only the last output to go to stderr, but still, it'd be nice to have something that worked slightly better.

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  • Is there a work around to configure brightness or color on a DisplayLink monitor?

    - by shaneykakes
    I run 3 monitors in addition to my laptop display at work - two of the monitors are using DisplayLink adapters. I've always thought that all my displays were too bright (and possibly give me headaches?) - even after I reduced their brightness as far as possible using the monitor menus and the nvidia software control panel. Recently I installed f.lux - I love it's "halogen" color profile which has improved my life considerably. The problem is that f.lux has no effect on/will not adjust the color & brightness of my two DisplayLink monitors. F.lux has a faq (#4 under troubleshooting) that addresses this - saying DisplayLink has no support for color calibration so f.lux only works with monitors "directly connected to your computer". Does anyone know of a work around? Specifically a way to use windows color management/profiles (or some other software) to adjust the brightness/color tone of DisplayLink monitors? Thanks in advance!

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  • Colors are not displayed correctly in GVim on some computers

    - by MARTIN Damien
    I try to use a colorscheme. On my desktop it looks like how it should be : https://github.com/martin-damien/tetrisity-vim/blob/master/tetrisity-vim.png But on my laptop, I have the following colors : http://img703.imageshack.us/img703/8444/errorufl.png Has you can see the most simple and visible point is in comments. The should be grey on black and they finaly are blue on transparent. What could make such errors ?

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  • less -Sr colourful.log How to view colourful log in less?

    - by Vi
    Both less -r (preserve terminal control sequences) and less -S (chop long lines) work well alone. But using them together breaks things. It chops too late and it wrecks the next line. Reducing COLUMNS environment variable is no op: (man less) But if you have a windowing system which supports TIOCGWINSZ or WIOCGETD, the window system's idea of the screen size takes precedence over the LINES and COLUMNS environment variables. How to view colourful logs with less? Resoved before asked: less -SR

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  • Imagemagick convert creates monochrome output only

    - by rumtscho
    I have a book scan as a pdf. When I open it with Adobe Reader, it looks like grayscale. When I open it with IrfanView, it looks like grayscale, and the Information option tells me that the image is actually 24 bit (I don't know if this is the real bit depth of the image embedded in the pdf or if IrfanView assigns the maximal depth when opening a pdf as image). I want to OCR the scan with OmniPage SE. It doesn't read PDF, so I decided to use ImageMagick to convert the file to PNG first. But no matter what I try, the output is always monochrome and practically unreadable. I tried different conversion lines, with different depth, density and resize values, but it didn't help. What you see was made with the options convert testfile.pdf -density 600x600 -depth 8 PNG:testfile.png. Any idea what causes the problem? Edit: To make it clear, the output looks like this for any value of -density, -depth and -resize I have tried. It also looks like that when I use no options at all, as in convert testfile.pdf PNG:testfile.png.

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  • Pictures Are Printed Extremely Dark

    - by Sam
    Problem I printed a picture using Windows Photo Viewer, and the resulting print was significantly darker than the original image. It was almost completely black. I'm using a Brother HL-2270DW printer. Troubleshooting Checked Windows's Colour Profile for printer: not set Checked available installed colour profiles: didn't see specific to this printer What doesn't work Printing it from Windows Photo Viewer Printing it from Paint.NET What works The printer's built-in self-test print page Windows's test print page Printing text from Notepad++ So the problem might be specific to: How Windows prints photos/pictures The picture How the printer prints photos/pictures

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  • How can I change the font color of the VS2012 Source Control Explorer window?

    - by RM.
    I am using Visual Stuido 2012 Integrated Shell with Team Explorer. I would like to change the default font color of the mapped and not mapped folders in the Source Control Explorer (in the treeview). I tried the Visual Studio Color Theme editor, but it seems like the font color of the Source Control Explorer and the Team Explorer can not be changed by it. I also looked at Tools|Options|Environment|Fonts and Color for a setting but did not find anything. Is it possible to change the font color? How?

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  • What can I use to read keyboard codes on Mac OS X?

    - by cwd
    I'm trying to debug some keyboard combinations and shortcuts in iTerm2 and am looking for a program to read keyboard codes. Is there an app that I can run which will tell me the keyboard codes for the keys I'm pressing? The thing that is prompting this is I'm trying to replicate the control+a / control+e behavior in iTerm2 of moving the cursor to the start / end of the line - but using the arrow keys, but I can't seem to figure out the right keycodes to do this.

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