ImageObject renders scaled when its image input dpi metadata is not 72

I found out that if I load an image using the ImageObject it renders small and blurred when the image metadata dpi is 300. If I change the dpi of the image to 72 outside drawbot (without changing the number of pixels) drawbot renders it as the actual image. I found a solution by loading the image using TIFFRepresentation instead of the current method in the _makeBitmapImageRep function. This method always keeps the right size regardless of the input image dpi metadata. This code sample only overrides the function _makeBitmapImageRep to show the difference. I'm not sure what would be the other effects of this change:

import AppKit
from drawBot.misc import DrawBotError, optimizePath
import Quartz
import os
from drawBot import *
from drawBot.context.tools.imageObject import ImageObject

def _makeBitmapImageRep(nsImage=None, pdfPage=None, imageResolution=72.0, antiAliasing=False, colorSpaceName=AppKit.NSCalibratedRGBColorSpace):
    """Construct a bitmap image representation at a given resolution."""
    if nsImage is None and pdfPage is None:
        raise DrawBotError("At least a image or a pdf page must be provided to create a bitmap representaion.")

    if pdfPage is not None:
        mediaBox = pdfPage.boundsForBox_(Quartz.kPDFDisplayBoxMediaBox)
        width, height = mediaBox.size
    elif nsImage is not None:
        width, height = nsImage.size()
    rep = AppKit.NSBitmapImageRep.imageRepWithData_(nsImage.TIFFRepresentation())
    return rep

def _open(self, path):
    """
    Open an image with a given `path`.
    """
    if isinstance(path, AppKit.NSImage):
        im = path
    elif isinstance(path, str):
        path = optimizePath(path)
        if path.startswith("http"):
            url = AppKit.NSURL.URLWithString_(path)
        else:
            if not os.path.exists(path):
                raise DrawBotError("Image path '%s' does not exists." % path)
            url = AppKit.NSURL.fileURLWithPath_(path)
        im = AppKit.NSImage.alloc().initByReferencingURL_(url)
    else:
        raise DrawBotError("Cannot read image path '%s'." % path)
    rep = _makeBitmapImageRep(im)
    ciImage = AppKit.CIImage.alloc().initWithBitmapImageRep_(rep)
    self._merge(ciImage, doCrop=True)

# remove the following line to see the default behavior
ImageObject.open = _open
imagePath = "sampleImage-300dpi.jpg"
i = ImageObject()
i.open(imagePath)
w, h = imageSize(i)
size(w, h)

typemytype / drawbot

ImageObject renders scaled when its image input dpi metadata is not 72 #508