I am using the PrintHelper class to print an image. It is working good. But can anyone please help me in how to initiate multiple image prints at a time ?
Following is the code I am using for printing each image
PrintHelper photoPrinter = new PrintHelper(getApplicationContext());
photoPrinter.setScaleMode(PrintHelper.SCALE_MODE_FIT);
photoPrinter.printBitmap("printName", bitmap);
Thank you.
Related
I am having trouble using the output from PiCamera capture function (directed in a BytesIO stream) and opening it using the PIL library. Here is the code (based on the PiCamera basic examples):
#Camera stuff
camera = PiCamera()
camera.resolution = (640, 480)
stream = io.BytesIO()
sleep(2)
try:
for frame in camera.capture_continuous(stream, format = "jpeg", use_video_port = True):
frame.seek(0)
image = Image.open(frame) //THIS IS WHERE IS CRASHES
#OTHER STUFF THAT IS NON IMPORTANT GOES HERE
frame.truncate(0)
finally:
camera.close()
stream.close()
The error is : PIL.UnidentifiedImageError: cannot identify image file <_io.BytesIO object at 0xaa01cf00>
Any help would be greatly appreciated :)
Have a nice day!
The problem is simple but I am wondering why the io library works that way.
One simply needs to seek back the stream to 0 after truncating it or seek to 0 and then simply call truncate with no parameter (all after you are done opening the image). Like so:
for frame in camera.capture_continuous(stream, format = "jpeg", use_video_port = True):
stream.seek(0)
image = Image.open(stream)
#Do stuff with image
stream.seek(0)
stream.truncate()
Basically when you open the image and do some operation on it, the pointer of the BytesIO can move around and end up somewhere else than the zero position. After that when you call truncate(0) it does not move the pointer back to zero as I thought it would (seems logical to me to move the pointer back to where the truncation occurs). When to code runs once more, the capture writes in the stream but this time it does not start writing at the beginning and everything breaks after that.
Hope this can help someone in the future :)
I am trying to figure out some basic operations in working with Swift and images (PNG and JPG).
I have gotten to the point where I can successfully load a given image, but am unsure how to properly apply image adjustments that will stick.
Specifically I am trying to be able to trigger the following:
colorize (HSB adjustment)
invert colors
From the samples I could find online it seems most code samples are for objective C, and I've been unable to get anything working in my current playground. It would seem from the documentation that I should be able to use filters (using CoreImage) but that is where I get lost.
Can anyone point me to or show me a valid (simple) approach that accomplishes this in Swift?
Many thanks in advance!
** EDIT ***
Here's the code I've got so far - working a bit better thanks to that link. However I still run into a crash when trying to output the results (that line is commented out)
So far all the examples I could find around the filtering code are objectiveC based.
import UIKit
var img = UIImage(named: "background.png")
var context = CIContext(options:nil)
var filter = CIFilter(name: "CIColorInvert");
filter.setValue(img, forKey: kCIInputImageKey)
//let newImg = filter.outputImage
Have you tried Google? "coreimage swift" gave me: http://www.raywenderlich.com/76285/beginning-core-image-swift
If this doesn't help, please post the code you've tried that didn't work.
I'm doing a project in liver tumor classification. I used this code and it gave some output. I don't know whether I'm correct.
Actually I initially used Region Growing method for liver segmentation and from that I segmented tumor using FCM. So, to this GLCM program, I gave the tumor segmented image as input. Was I correct? If so, I think, then, my output will also be correct.
I gave the parameters exactly as in the example. Actually what do they mean? Do I need to change them for different images? If so, how to give the parameters? I'm completely new to this. So, kindly guide me.
I got this output. Am I correct?
stats =
autoc: [1.857855266614132e+000 1.857955341199538e+000]
contr: [5.103143332457753e-002 5.030548650257343e-002]
corrm: [9.512661919561399e-001 9.519459060378332e-001]
corrp: [9.512661919561385e-001 9.519459060378338e-001]
cprom: [7.885631654779597e+001 7.905268525471267e+001]
cshad: [1.219440700252286e+001 1.220659371449108e+001]
dissi: [2.037387269065756e-002 1.935418927908687e-002]
energ: [8.987753042491253e-001 8.988459843719526e-001]
entro: [2.759187341212805e-001 2.743152140681436e-001]
homom: [9.930016927881388e-001 9.935307908219834e-001]
homop: [9.925660617240367e-001 9.930960070222014e-001]
maxpr: [9.474275457490587e-001 9.474466930429607e-001]
sosvh: [1.847174384255155e+000 1.846913030238459e+000]
savgh: [2.332207337361002e+000 2.332108469591401e+000]
svarh: [6.311174784234007e+000 6.314794324825067e+000]
senth: [2.663144677055123e-001 2.653725436772341e-001]
dvarh: [5.103143332457753e-002 5.030548650257344e-002]
denth: [7.573115918713391e-002 7.073380266499811e-002]
inf1h: [-8.199645492654247e-001 -8.265514568489666e-001]
inf2h: [5.643539051044213e-001 5.661543271625117e-001]
indnc: [9.980238521073823e-001 9.981394883569174e-001]
idmnc: [9.993275086521848e-001 9.993404634013308e-001]
Kindly guide me. Thank you
its ok but i don't think we usually need all this extra information i usually prefer to use the following code
GLCM2 = graycomatrix(img,'Offset',[1 1]);
stats = graycoprops(GLCM2);
i hope it will help you
Up until now, this block of code has been using to build documents with text for several months with no snags. I am now trying to dynamically add images. I've spent about two days staring at code and researching and am at an end. I suspect the issue is that relationships are not being created (more details below.) Maybe not?
//set stuff up...
WordprocessingDocument doc = WordprocessingDocument.Open(fsPat, true, new OpenSettings(){
AutoSave = true,
MarkupCompatibilityProcessSettings = new MarkupCompatibilityProcessSettings(MarkupCompatibilityProcessMode.ProcessAllParts,
DocumentFormat.OpenXml.FileFormatVersions.Office2007),
MaxCharactersInPart = long.MaxValue
});
MainDocumentPart mainPart = doc.MainDocumentPart;
.
.Other stuff goes here
.
//now the fun...
Run r2 = new Run();
// Add an ImagePart.
ImagePart ip = mainPart.AddImagePart(ImagePartType.Png);
string imageRelationshipID = mainPart.CreateRelationshipToPart(ip); //
using (Stream imgStream = ip.GetStream())
{
System.Drawing.Bitmap b = new System.Drawing.Bitmap("myfile.png");
b.Save(imgStream, System.Drawing.Imaging.ImageFormat.Png);
}
Drawing drawing = BuildImage(imageRelationshipID, "name"+imageRelationshipID.ToString(), 17, 17);
r2.Append(drawing);
p.Append(r2);
The image part is essentially copied from http://blog.stuartwhiteford.com/?p=33) and is running in a loop presently. I also copied his BuildImage() function and use it as-is.
When I open the resulting docx, I see red Xs where the images are saying "This image cannot currently be displayed."
When I open the zip, the images will appear in root/media, but not root/word/media as I'd expect. I also cannot find the images referenced in any of the relationship files. Ideally they'd be in root/word/_rels/document.xml.rels. You'll notice I changed how imageRelationshipID is set hoping to fix this. It didn't.
Please help. Thank you.
So... It seems like OpenXML just hates me. I copied AddImagePart code from like 3-4 places among trying other things--none of which lasted long--and just could not get relationships to form. The implication I see is that they happen automatically with the AddImagePart function.
I ended up doing a complete workaround where I add all the pictures I might want to put and remove the Drawing nodes' parents of the ones I didn't want (Run nodes, generally.) Since these are very small pictures, it's feasible and in ways more elegant than trying to add them as necessary since I don't have to keep track of where images are stored on disk.
i have a question, totally newbie but i would like to know how can i get to compare and image in an if else statement?
i have an image lets say it is "img.png" and i have it displayed in an imageview already in the application, however in the codes i would like to compare if the image show is "img.png"
I understand that for string we use the isEqualToString:, so if it's for an image what would i use?
example would be :
if ([img.image isEqual:#"img.png"])
What i've typed is something like this but it isnt working. could anyone point me in the right direction? thanks alot
Much appreciated!
If you first got the image using [UIImage imageNamed:#"img.png"] you could compare the image object pointers: if (img.image == [UIImage imageNamed:#"img.png"]).
But: I'd consider this bad design and would rather use another way of identifying images, like storing the name of the image in another instance variable.