Configuration Of QT With OpenCV. >height, QImage:: Format_Indexed8); qimgNew. Click on “Grayscale Img” button and it will show choose file option. The grayscale QImage needs a color lookup table, so the first time this code is executed, it will create and fill in the static table. As Bastian mentions in the comments) and QImage::Format_RGB888 (8-bit unsigned, 3 channels), and QImage::Format_Indexed8 (8-bit unsigned, 1 channel – grayscale). Multi-layer PyQt4 image viewer. Vmax for the big window grayscale and # set up the float-to. If I create a QImage using QImage::Format_Indexed8 and then specify a grayscale color table, I can use the pixelIndex() method to retrieve certain pixel values. If I save that QImage as PNG and reload it, it is automatically converted to QImage::Format_Grayscale8 and the pixelIndex() method no longer. Ez Macros 5 1 Keygen Music.

Void QImage::setPixel ( const QPoint & position, uint index_or_rgb ) Sets the pixel index or color at the given position to index_or_rgb. If the image's format is either monochrome or 8-bit, the given index_or_rgb value must be an index in the image's color table, otherwise the parameter must be a QRgb value. If position is not a valid coordinate pair in the image, or if index_or_rgb >= numColors() in the case of monochrome and 8-bit images, the result is undefined. Warning: This function is expensive due to the call of the internal detach() function called within; if performance is a concern, we recommend the use of scanLine() to access pixel data directly.

See also pixel() and Pixel Manipulation. Sam Records Extended Play Disco Classics Rarity. One need to set colormap (setColorTable) and only when use setPixel QImage to paint if format is monochrome or 8-bit (like this case). Emco Msi Package Builder Starter Keygen Torrent. Otherwise you get undefined behaviour.