Leptonica

visual studio 2015 and tesseract 3.05 on x64

由 久未见 提交于 2020-01-01 19:14:01
问题 well i really need help here. my problem is how can i add tesseract 3.05 and leptonica 1.73 libraries to visual studio 2015 x64 (windows 10). i manage to do that last summer with visual studio 2013 and the older version of leptonica and tesseract because it was kinda easy and all includes and lib was there i just had to give the path and download some dll. but now i couldn't even see the right include and lib that i should use. well i'm not pro in those things so please if anyone can help me

How to get skew angle from image

由 半城伤御伤魂 提交于 2019-12-22 00:00:10
问题 I am facing problem to get the skew angle from image .I am using tesseract api for image processing. I have searched a lot on web but no appropriate solution found. I have used following code: Pix test=ReadFile.readBitmap(bitmap.createBitmap(400, 400, Config.ARGB_8888)); float angle=Skew.findSkew(test); from above code I get angle value 0.0. Please help me to resolve this problem or show the right direction to resolve this problem. 回答1: TessBaseAPI baseApi = new TessBaseAPI(); baseApi

Leptonica OpenCV Java convert Mat to Pix and vise versa

由 主宰稳场 提交于 2019-12-20 03:26:09
问题 I use the following lept4j and OpenCV Maven dependencies: <!-- Leptonica --> <dependency> <groupId>net.sourceforge.lept4j</groupId> <artifactId>lept4j</artifactId> <version>1.9.0</version> </dependency> <!-- OpenCV --> <dependency> <groupId>org.openpnp</groupId> <artifactId>opencv</artifactId> <version>3.2.0-1</version> </dependency> I'd like to use OpenCV and Leptonica functions together. In order to do this, I need to be able to convert Mat to Pix and Pix to Mat. This is what I have for now

Image pixels getting lost while rotation using leptonica

由 自作多情 提交于 2019-12-13 00:38:57
问题 I want to extract text from an image for which I need to rotate it in steps of 90 degrees.When I rotate the image using pixRotate(image, deg2rad * angle, L_ROTATE_AREA_MAP, L_BRING_IN_BLACK, 0, 0) some pixels at the top and bottom are lost.The variations I have tried are pixRotate(image, deg2rad * angle, L_ROTATE_AREA_MAP, L_BRING_IN_BLACK, w, h) and also with L_ROTATE_SHEAR, L_ROTATE_SAMPLING.However The pixels near the boundary are getting lost in each case.Is there a way to do this

Building tesseract without leptonica

由 末鹿安然 提交于 2019-12-12 03:35:00
问题 I need to build tesseract without leptonica dependency for some work(to porting using emscripten). I looked into the make files and it seems tesseract requires leptonica header files and lib files in order to build. Providing header files is not an issue but i can't provide lib files because of some reason(emscripten doesn't generate lib files of leptonica). and i tried to stop tesseract asking for leptonica by editing make files but it seems i'm heading in wrong way. I'm very new to make

tesseract compile issue: leptonica_OUTPUT_NAME is not set

由 99封情书 提交于 2019-12-12 03:27:21
问题 I am trying to compile the source code of Tesseract Open Source OCR Engine (https://github.com/tesseract-ocr/tesseract). But when running cmake, I always get the following error: CMake Error: The following variables are used in this project, but they are set to NOTFOUND. Please set them or make sure they are set and tested correctly in the CMake files: leptonica_OUTPUT_NAME linked by target "libtesseract" in directory /home/test/github/tesseract I have already downloaded the source code of

C++: Hbitmap/BITMAP into .bmp file [duplicate]

由 自闭症网瘾萝莉.ら 提交于 2019-12-10 10:43:25
问题 This question already has answers here : Save HBITMAP to *.bmp file using only Win32 (4 answers) Closed 5 years ago . Ok, whole story is, I am trying to use Leptonica+Tesseract OCR in C++ to take a screenshot, save it to a *.bmp file, then load it back up to OCR with it. I won't need to do this frequently, but as I cannot seem to copy the screenshot data directly into a Leptonica PIX structure, I need to save it to a file first..actually a solution to this would be preferably. Here's some

Convert between OpenCV Mat and Leptonica Pix

由 一个人想着一个人 提交于 2019-12-10 10:34:37
问题 I need to convert between OpenCV Mat image and Leptonica Pix image formats in C++. This is being used for binarization of 8bit gray images. 回答1: I found found @ikarliga's answer worked for me because what I needed was to actually convert to the Mat format not necessarily use it with the Tesseract API which is what that OP was asking. Here are both the functions I use. The pix8ToMat function is taken from the node-dv project Pix *mat8ToPix(cv::Mat *mat8) { Pix *pixd = pixCreate(mat8->size()

How to install leptonica+tesseract on Windows without Visual Studio to use in Anaconda?

由 独自空忆成欢 提交于 2019-12-10 09:43:16
问题 I wanted to perform text recognition from images and I want to use Python. I installed Anaconda. Now I want to install Tesseract but I also need to install Leptonica. I did not find any clear instruction how to do it in windows. For Leptonica I do not want to install Visual Studio. So could anybody provide clear instructions how to install leptonica and tesseract on Windows without Visual Studio to use in anaconda ? Thanks. 回答1: Here is simple set of steps to have tesseract 3.05 dev version

Convert between OpenCV Mat and Leptonica Pix

由 只愿长相守 提交于 2019-12-06 09:59:49
I need to convert between OpenCV Mat image and Leptonica Pix image formats in C++. This is being used for binarization of 8bit gray images. loot I found found @ikarliga's answer worked for me because what I needed was to actually convert to the Mat format not necessarily use it with the Tesseract API which is what that OP was asking. Here are both the functions I use. The pix8ToMat function is taken from the node-dv project Pix *mat8ToPix(cv::Mat *mat8) { Pix *pixd = pixCreate(mat8->size().width, mat8->size().height, 8); for(int y=0; y<mat8->rows; y++) { for(int x=0; x<mat8->cols; x++) {
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