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首先，我是新手，感谢您的耐心等待。

我正在尝试开发自己的照片马赛克程序——对我来说，这是一个学习之旅。

作为程序的一部分，我试图枚举图像文件夹，计算RGB图像像素的平均值，将此数据存储在NSDictionary对象中，然后收集NSDictionary数组中每个图像的数据。

目前，当我尝试学习东西时，代码有点像打瞌睡的方法——而且我还没有内置任何错误捕获功能。

代码有效，但是，当我通过工具运行它时，我会为大量对象分配大量的资源，NSCalibratedRGBColor这些对象似乎在例程结束时没有被释放。

欢迎任何有关如何处理此内存问题的想法/指导。

我正在使用以下代码来计算平均 RGB。

while (tempFile = [dirEnum nextObject]) {

    //need to process the images within this while loop
    if ([filesAllowed containsObject:[tempFile pathExtension]]) {
        count = count + 1;
        test = [NSString stringWithFormat:@"%@/%@", imageSourceFilePath, tempFile];
        tempFileURL = [NSURL fileURLWithPath:test];

        CIImage *sourceCIImage = [[CIImage alloc] initWithContentsOfURL:tempFileURL];
        NSBitmapImageRep *tempBitmapImageRep = [[NSBitmapImageRep alloc] initWithCIImage:sourceCIImage];
        NSInteger imageHeight = [tempBitmapImageRep pixelsHigh];
        NSInteger imageWidth = [tempBitmapImageRep pixelsWide];
        int totalPixels = (int)imageWidth * (int)imageHeight;

        countPixelsWide = 0;
        countPixelsHigh = 0;
        totalGreen = 0;
        totalBlue = 0;
        totalRed = 0;

        //work out averages - iterate over each column
        while (countPixelsWide < imageWidth) {
            while (countPixelsHigh < imageHeight) {
                tempColor = [tempBitmapImageRep colorAtX:countPixelsWide y:countPixelsHigh];
                [tempColor getRed:&tempRed green:&tempGreen blue:&tempBlue alpha:&tempAlpha];
                totalRed = totalRed + tempRed;
                totalBlue = totalBlue + tempBlue;
                totalGreen = totalGreen + tempGreen;
                countPixelsHigh = countPixelsHigh + 1;
            }
            countPixelsWide = countPixelsWide + 1;
            countPixelsHigh = 0;
        }

        //calculate averages - re-use total variables
        totalRed = totalRed/totalPixels;
        totalBlue = totalBlue/totalPixels;
        totalGreen = totalGreen/totalPixels;


        //create dictionary for each source image and then add to sourceImageArray for later reference
        dictOfSourceImages = [self makeDictionaryRecord:tempFileURL withAverageRed:[NSNumber numberWithFloat:totalRed] withAverageBlue:[NSNumber numberWithFloat:totalBlue] withAverageGreen:[NSNumber numberWithFloat:totalGreen]];
        [sourceImageData addObject:dictOfSourceImages];
    }
}
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