Python Imaging Library makes an image reddish -

-

i have opened grayscale image using python imaging library, copied every pixel value image variable of same size , saved it. when open new image image viewer looks reddish. have used image.new() method , without "white" , "black" arguments got same reddish output.

my code:

from pil import image import math  def run():     im = image.open("hrabowski.jpg")     pix = im.load()     print im.size     # print pix[0, 1]      im2 = image.new("rgb", (2400, 2400))      in range(im.size[0]):         j in range(im.size[0]):             im2.putpixel((i, j), pix[i, j])      im2.save("hrabowski-2400-2400.jpg")

original image (scaled down 500 x 500):

enter image description here

python output of code (scaled down 500 x 500):

enter image description here

could please tell me doing wrong?

your problem want create rgb image has 3 channels. therefore 1 pixel value consists of 3 values , not 1 (in case use gray value of original image each of channels).

i have modified code accordingly.

a side remark: sure there better way want achieve, there no need loop through single pixels, not sure after.

from pil import image import math  def run():     im = image.open("zhig0.jpg")     pix = im.load()     print im.size     # print pix[0, 1]      im2 = image.new("rgb", (2400, 2400))      in range(im.size[0]):         j in range(im.size[0]):             im2.putpixel((i, j), (pix[i, j],pix[i, j],pix[i, j]))      im2.save("zhig0-2400-2400.jpg") run()

Comments

Post a Comment

Popular posts from this blog

ios - RestKit 0.20 — CoreData: error: Failed to call designated initializer on NSManagedObject class (again) -

-
this error has shown on many times, seems. prominent answer issue seems restkit 0.20 — coredata: error: failed call designated initializer on nsmanagedobject class however, solution posted doesn't work me. let's start beginning: i want upload file server. want parse response make sure uploaded. if not, try again later. model has boolean variable called nsnumber *senttoserver purpose (in coredata, bool saved nsnumber ) . because don't know whether sending going successful, save entity coredata model first before sending via restkit. when post request successful, server returns json string this: {"id":14,"created":true} notice that, of course, id not set on coredata model yet, both id , created new informations model. here's model: @interface recording : nsmanagedobject @property (nonatomic, retain) nsstring * audiofilepath; @property (nonatomic, retain) nsdate * createdat; @property (nonatomic, retain) nsstring * deviceid; @
Read more

java - Digest auth with Spring Security using javaconfig -

-
so i'm trying create digest authentication spring following documentation trying translate xml "requirements" in java requirements. let's have xml in docs: <bean id="digestfilter" class= "org.springframework.security.web.authentication.www.digestauthenticationfilter"> <property name="userdetailsservice" ref="jdbcdaoimpl"/> <property name="authenticationentrypoint" ref="digestentrypoint"/> <property name="usercache" ref="usercache"/> </bean> <bean id="digestentrypoint" class= "org.springframework.security.web.authentication.www.digestauthenticationentrypoint"> <property name="realmname" value="contacts realm via digest authentication"/> <property name="key" value="acegi"/> <property name="noncevalidityseconds" value="10"/> </b
Read more

laravel - PDOException in Connector.php line 55: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES) -

-
my .env: app_env=local app_debug=true app_key=myappkey app_url=http://localhost db_connection=mysql db_host=localhost db_port=3306 db_database=gestiontaller db_username=root db_password='root' cache_driver=file session_driver=file queue_driver=sync redis_host=127.0.0.1 redis_password=null redis_port=6379 mail_driver=smtp mail_host=mailtrap.io mail_port=2525 mail_username=null mail_password=null mail_encryption=null i've tried password ", ' , without, restarting server every time. i've tried changing localhost 172.0.0.1. yes, password correct, running mysql -u root -p introducing password root in prompt can go mysql. users table: +------------------+-----------+ | user | host | +------------------+-----------+ | debian-sys-maint | localhost | | mysql.sys | localhost | | root | localhost | | root1 | localhost | +------------------+-----------+ i've added homestead.yaml this: database_port: 3306
Read more