[Gimp-developer] /Filters/Render/Stroke to SVG...
When it doesn't register, is there any console output from GIMP? Chris Ive got things working now and use numpy to convert bluelines to SVG lines or a python tuple that gets written out. It could be of general interest for vectorizing if it treated a selection. But I am converting scanned stripcharts, and the ink is blue... One y per x is all I need, and there would be a slick way to do that with numpy; Im just using a stride for line thinning. The part I dont understand is this; I pass my bluemask to (Fremlins) write_out(drawable, image) as the image, it fails the assertion and does not post... numpy.array((image*256).round(0),B) def write_out(drawable, image): by John Fremlin byte_image = numpy.array((image*256).round(0),B) # B is a ubyte width = drawable.width height = drawable.height bpp = drawable.bpp sys.stderr.write(write_out::drawable.width=%i drawable.height=%i drawable.bpp=%i\n % (width, height, bpp)) pr = drawable.get_pixel_rgn(0, 0, width, height, True) assert(byte_image.size == width * height * bpp) pr[:,:] = byte_image.tostring() stroke_to_vector.py Description: Binary data ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] /Filters/Render/Stroke to SVG...
Hi Paul, On Fri, Sep 26, 2008 at 2:19 AM, paul taney [EMAIL PROTECTED] wrote: When it doesn't register, is there any console output from GIMP? Chris Ive got things working now and use numpy to convert bluelines to SVG lines or a python tuple that gets written out. It could be of general interest for vectorizing if it treated a selection. But I am converting scanned stripcharts, and the ink is blue... One y per x is all I need, and there would be a slick way to do that with numpy; Im just using a stride for line thinning. The part I dont understand is this; I pass my bluemask to (Fremlins) write_out(drawable, image) as the image, it fails the assertion and does not post... numpy.array((image*256).round(0),B) Which assertion fails? def write_out(drawable, image): by John Fremlin byte_image = numpy.array((image*256).round(0),B) # B is a ubyte width = drawable.width height = drawable.height bpp = drawable.bpp sys.stderr.write(write_out::drawable.width=%i drawable.height=%i drawable.bpp=%i\n % (width, height, bpp)) pr = drawable.get_pixel_rgn(0, 0, width, height, True) assert(byte_image.size == width * height * bpp) pr[:,:] = byte_image.tostring() You are passing an RGB array to this function. Are you certain that your destination drawable does not have an alpha channel (thus requiring you to pass an RGBA array)? David -- Everything has reasons. Nothing has justification. Ĉio havas kialojn; Neniaĵo havas pravigeron. ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] /Filters/Render/Stroke to SVG...
--- On Thu, 9/25/08, David Gowers [EMAIL PROTECTED] wrote: From: David Gowers [EMAIL PROTECTED] Hi Paul, On Fri, Sep 26, 2008 at 2:19 AM, paul taney [EMAIL PROTECTED] wrote: When it doesn't register, is there any console output from GIMP? Chris Ive got things working now and use numpy to convert bluelines to SVG lines or a python tuple that gets written out. It could be of general interest for vectorizing if it treated a selection. But I am converting scanned stripcharts, and the ink is blue... One y per x is all I need, and there would be a slick way to do that with numpy; Im just using a stride for line thinning. The part I dont understand is this; I pass my bluemask to (Fremlins) write_out(drawable, image) as the image, it fails the assertion and does not post... numpy.array((image*256).round(0),B) Why does he multiply the image by 256 and elsewhere divide image/256? Which assertion fails? Line 207: assert(byte_image.size == width * height * bpp) fails, right before the blit. def write_out(drawable, image): by John Fremlin byte_image = numpy.array((image*256).round(0),B) # B is a ubyte width = drawable.width height = drawable.height bpp = drawable.bpp sys.stderr.write(write_out::drawable.width=%i drawable.height=%i drawable.bpp=%i\n % (width, height, bpp)) pr = drawable.get_pixel_rgn(0, 0, width, height, True) assert(byte_image.size == width * height * bpp) pr[:,:] = byte_image.tostring() # blit You are passing an RGB array to this function. Are you certain that your destination drawable does not have an alpha channel (thus requiring you to pass an RGBA array)? I have added a test for that, as best I know how; but it still fails at 207. if drawable.has_alpha: img = gimp.Image(width, height, RGBA_IMAGE) new_layer = gimp.Layer(img, new_layer_name, width, height, RGBA_IMAGE, opacity, NORMAL_MODE) else: img = gimp.Image(width, height, RGB_IMAGE) new_layer = gimp.Layer(img, new_layer_name, width, height, RGB_IMAGE, opacity, NORMAL_MODE) stroke_to_vector.py Description: Binary data ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] /Filters/Render/Stroke to SVG...
Hi Paul. On Fri, Sep 26, 2008 at 8:56 AM, paul taney [EMAIL PROTECTED] wrote: Why does he multiply the image by 256 and elsewhere divide image/256? He's expecting an image with values ranging 0..1. If the values you are providing are 0..255, you'll need to remove both of those. Which assertion fails? Line 207: assert(byte_image.size == width * height * bpp) fails, right before the blit. def write_out(drawable, image): by John Fremlin byte_image = numpy.array((image*256).round(0),B) # B is a ubyte width = drawable.width height = drawable.height bpp = drawable.bpp sys.stderr.write(write_out::drawable.width=%i drawable.height=%i drawable.bpp=%i\n % (width, height, bpp)) pr = drawable.get_pixel_rgn(0, 0, width, height, True) assert(byte_image.size == width * height * bpp) pr[:,:] = byte_image.tostring() # blit You are passing an RGB array to this function. Are you certain that your destination drawable does not have an alpha channel (thus requiring you to pass an RGBA array)? I have added a test for that, as best I know how; but it still fails at 207. if drawable.has_alpha: img = gimp.Image(width, height, RGBA_IMAGE) new_layer = gimp.Layer(img, new_layer_name, width, height, RGBA_IMAGE, opacity, NORMAL_MODE) else: img = gimp.Image(width, height, RGB_IMAGE) new_layer = gimp.Layer(img, new_layer_name, width, height, RGB_IMAGE, opacity, NORMAL_MODE) This will not necessarily help, because your vanderwalt() routine is still producing an RGB image always. David -- Everything has reasons. Nothing has justification. Ĉio havas kialojn; Neniaĵo havas pravigeron. ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
