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2014/10/15 ¤U¤È 10:04:43
iphone Programming Glossary: brightnessHow to programmatically change the hue of UIImage? http://stackoverflow.com/questions/11555071/how-to-programmatically-change-the-hue-of-uiimage the hue on top of the image. CGContextSetBlendMode context kCGBlendModeHue UIColor colorWithHue hue saturation 1.0 brightness 1 alpha alpha set UIBezierPath imagePath UIBezierPath bezierPathWithRect imageExtent imagePath fill Retrieve the new image...
color replacement in image for iphone application http://stackoverflow.com/questions/15082025/color-replacement-in-image-for-iphone-application arguments to be provided. 5 cvMerge the new image with the new hue with an image composed by the saturation and brightness channels that you saved in step one. i understand that cvMerge will merge three channel of H S and V but how i can use output..
Changing Backlight Level, iPhone http://stackoverflow.com/questions/1777470/changing-backlight-level-iphone it and can't wait till I can give a little back by answering some questions. Many thanks Stu iphone objective c brightness backlight share improve this question The reason you are getting a warning is because GSEventSetBacklightLevel is a..
Check if UIColor is dark or bright? http://stackoverflow.com/questions/2509443/check-if-uicolor-is-dark-or-bright the following http www.w3.org WAI ER WD AERT #color contrast If you're only doing black or white text use the color brightness calculation above. If it is below 125 use white text. If it is 125 or above use black text. edit 1 bias towards black text...
Change Backlight Brightness on iPhone Programmatically http://stackoverflow.com/questions/366889/change-backlight-brightness-on-iphone-programmatically Backlight Brightness on iPhone Programmatically Does the SDK provide any way to change the brightness of the backlight or turn it off temporarily iphone backlight share improve this question No. This is not available..
Is there a way of adjusting the screen brightness programmatically? http://stackoverflow.com/questions/3779667/is-there-a-way-of-adjusting-the-screen-brightness-programmatically there a way of adjusting the screen brightness programmatically I have an iPhone app for photographic purposes kind of a lightbox . This app needs as much brightness.. programmatically I have an iPhone app for photographic purposes kind of a lightbox . This app needs as much brightness as possible. Is there a way to change the screen brightness programmatically and then restore it back some time later iphone.. purposes kind of a lightbox . This app needs as much brightness as possible. Is there a way to change the screen brightness programmatically and then restore it back some time later iphone ios share improve this question Edit iOS 5 now includes..
Turn off display in iPhone OS (iOS) http://stackoverflow.com/questions/3950194/turn-off-display-in-iphone-os-ios off display in iPhone OS iOS is there a way to programmatically turn off the display in iOS Not just turning brightness down but off like the way the Phone App does. I am happy to use private API since this is for personal use. Thanks iphone..
How to get RGB values from UIColor? http://stackoverflow.com/questions/437113/how-to-get-rgb-values-from-uicolor creating a color object using the following code. curView.backgroundColor UIColor alloc initWithHue 229 saturation 40 brightness 75 alpha 1 How can I retrieve RGB values from the created color object iphone rgb uicolor share improve this question..
Can example “GLImageProcessing” work with multi filters http://stackoverflow.com/questions/4375479/can-example-glimageprocessing-work-with-multi-filters work with multi filters I use the example GLImageProcessing but it can not process the image with both brightness and contrast so i write the code to adjust both brightness and contrast but it can't work at all can anybody can help me.. but it can not process the image with both brightness and contrast so i write the code to adjust both brightness and contrast but it can't work at all can anybody can help me about this thank you for review init glMatrixMode GL_PROJECTION.. 0 0 result.wide result.s result.high result.t glClear GL_COLOR_BUFFER_BIT glDisable GL_BLEND process 1 adjust brightness float t 1.2 glVertexPointer 2 GL_FLOAT sizeof V2fT2f flipquad 0 .x glTexCoordPointer 2 GL_FLOAT sizeof V2fT2f flipquad 0..
GLImageProcessing Multiple Filters? http://stackoverflow.com/questions/6425861/glimageprocessing-multiple-filters prevmode 1 typedef void procfunc V2fT2f float typedef struct procfunc func procfunc degen Filter const Filter filter brightness contrast extrapolate greyscale hue extrapolate blur The blur could be exaggerated by downsampling to half size #define..
How to change a particular color in an image? http://stackoverflow.com/questions/8046643/how-to-change-a-particular-color-in-an-image mask to apply the new hue. cvMerge the new image with the new hue with an image composed by the saturation and brightness channels that you saved in step one. There are several OpenCV iOS ports in the net eg http www.eosgarden.com en opensource..
Draw glow around inside edge of multiple CGPaths http://stackoverflow.com/questions/8480401/draw-glow-around-inside-edge-of-multiple-cgpaths NO 0.0 self drawInnerGlowWithPaths paths bounds self.imageView.bounds color UIColor colorWithHue 0 saturation 1 brightness .8 alpha .8 offset CGSizeZero blur 10.0 imageView.image UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext..
iPhone: How can we programmatically change the brightness of the screen? http://stackoverflow.com/questions/8936999/iphone-how-can-we-programmatically-change-the-brightness-of-the-screen How can we programmatically change the brightness of the screen How can I change the brightness of the screen programtically using iPhone SDK Please let me know. Thanks.. How can we programmatically change the brightness of the screen How can I change the brightness of the screen programtically using iPhone SDK Please let me know. Thanks iphone objective c ios cocoa touch ios5 share..
Applying brightness and contrast with OpenGL ES http://stackoverflow.com/questions/1506299/applying-brightness-and-contrast-with-opengl-es but it only is able to do one at a time calling both methods in the sample overwrites the previous result . Brightness works great glTexEnvi GL_TEXTURE_ENV GL_TEXTURE_ENV_MODE GL_COMBINE if brightness 1.0f glTexEnvi GL_TEXTURE_ENV GL_COMBINE_RGB.. texture of the same size then perform the contrast adjustment as you render this texture to the screen. Image Brightness Texture Contrast Screen Some useful reading on framebuffers and render to texture Rendering with Framebuffer objects OpenGL..
http://stackoverflow.com/questions/2591013/objective-c-rgb-to-hsb or darker version of it automatically I figured the easy way to do this is to convert my RGB to HSB Hue Saturation Brightness How would I do that in Objective C Let's say I've got a RGB which is 1.0 0.0 0.0. That's red. CGFloat r 1.0 CGFloat g 0.0..
Change Backlight Brightness on iPhone Programmatically http://stackoverflow.com/questions/366889/change-backlight-brightness-on-iphone-programmatically Backlight Brightness on iPhone Programmatically Does the SDK provide any way to change the brightness of the backlight or turn it off temporarily..
Determining Image Luminance/Brightness http://stackoverflow.com/questions/4876315/determining-image-luminance-brightness Image Luminance Brightness My iphone application captures the realtime data from camera using AVFoundation's AVCaptureSession. I'm able to access..
iOS Launching Settings -> Restrictions URL Scheme http://stackoverflow.com/questions/8246070/ios-launching-settings-restrictions-url-scheme prefs root AIRPLANE_MODE prefs root General path AUTOLOCK prefs root General path USAGE CELLULAR_USAGE prefs root Brightness prefs root General path Bluetooth prefs root General path DATE_AND_TIME prefs root FACETIME prefs root General prefs root..
Custom UISlider: avoid updating when dragging outside http://stackoverflow.com/questions/8287413/custom-uislider-avoid-updating-when-dragging-outside that by default UISlider keep getting updated even if the finger is dragged outside of it try to open for example the Brightness section in System Preferences and you'll see that the slider will keep on updating even if you drag outside of it . So my..
How to set UIScreen Brightness Using UISlider in iOS4 from Setting.bundle http://stackoverflow.com/questions/9783513/how-to-set-uiscreen-brightness-using-uislider-in-ios4-from-setting-bundle to set UIScreen Brightness Using UISlider in iOS4 from Setting.bundle I am working one Feature of setting Brightness of mainscreen i search lots of.. to set UIScreen Brightness Using UISlider in iOS4 from Setting.bundle I am working one Feature of setting Brightness of mainscreen i search lots of googling got one code. UISlider slider UISlider sender float fBrightness slider.value UIScreen.. of setting Brightness of mainscreen i search lots of googling got one code. UISlider slider UISlider sender float fBrightness slider.value UIScreen mainScreen setBrightness fBrightness But this code is worked Only iOS5 not in iOS4 when i am using..
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