Convert varying hex string to array of 8 and 16 bit numbers
I have a data string that I'm reading from a file. The format of the string is as follows:
a bB cC dD eE fF gG hH iI j kK/r
each letter is an 8 bit character. The capitol letters are high bit of a 16 bit number.
I have a sample that works. It converts all the characters to an array with eleven rows. My problem is my files usually have a million data points or more and it takes a while for my VI to execute.
I've attached a sample file and an example VI with 3 possible ...How to copy an 8 bits array into a 16 bits array?
I need a fast code which copies an 8 bits array, into a 16 bits array.
I have now:
for( i=0;i < size; i++)
I am not familiar with pentium assembly.
On Thu, 16 Dec 2004 20:33:12 +0000 (UTC), firstname.lastname@example.org wrote in
> I need a fast code which copies an 8 bits array, into a 16 bits array.
> I have now:
> char* src;
> short* dst;
> int i,size;
> for( i=0;i < size; i++)
This is a redundant...Convert ctypes 16 bit c_short array to a 32 bit numpy array
I'm using ctypes to have a dll fill a buffer with 16 bit data. I then
want to convert this data to a numpy array. The code snippet below
converts the data from 16 bit to 32 bit, but two 16 bit numbers are
concatenated to make a 32 bit number and half the array is zero.
Buffer = (c_short * byteSize)()
self.cam.Qframe.pBuffer = cast(pointer(Buffer), c_void_p)
perr = self.cam.GrabFrame()
image1 = np.frombuffer(Buffer, int)
xdim = self.cam.Qframe.width
ydim = self.cam.Qframe.height
image2 = image1.reshape(xdim, ydim)
imag...converting 8 bit image array to 16 bit?
i've got an structure wich is like an pointer to 320*240 array wich is
8 bit image...
i've got also stored its color pallate in some other structure....
i was willing to port this to another platform and like to use it
under 16 bit color display....
i only know that i have an address for start of that 16 bit memory
address to put values in...but i dont know how to convert those 8 bit
indexed colors to 16 bit?
Roozbeh GHolizadeh wrote:
> Hi there....
> i've got an structure wich is like an pointer to 320*240 array wich is
> 8 bit image...
>...Hex String to Number to Array... I think...
Hello to the group,
Here's my dillemma...
I'm interested in a specific output from my device. The expected output is 256 values, as a row of 512 byte (Hex). To simplify communication, I used the LabVIEW Serial VI and added a terminal at the "Read String". This outputs a string (when displayed as "Hex Display") like 0200 0200 ... ... 0200 0100. I wired that output into the "String" input of a Hexidecimal String to Number conversion. Then, I am using a Build Array, wired into the single element. Finally, the app...save 16 bit array as image
I am a new labview user. I am trying to save an image which is being
correctly displayed on the front panel of my program as an intensity
graph. I am able to get a 2D array of the pixel values (using the
variant to data function, the camera I use has an Active X interface
with labview). The camera allows 16 bit or 12 bit digitization options.
I would like to save the image pizel values as a 16 bit BMP or TIFF
file. However, from what I understand, the flatten pixmap option in
labview does not support 16 bit images. How do I go about saving my
images? Any feedback would be ext...bit numbers in packed arrays of Boolean
I was pleasantly surprised to discover that given this code compiled
with GNAT 6.2.1 for an Intel processor:
subtype Bit_Index_16_Type is Integer range 0 .. 15;
type Bit_Array_16_Type is array (Bit_Index_16_Type) of Boolean;
pragma Pack (Bit_Array_16_Type);
for Bit_Array_16_Type'Size use 16;
function To_Bit_Array is new Ada.Unchecked_Conversion
(Source => Interfaces.Unsigned_16,
Target => Bit_Array_16_Type);
Word : constant Interfaces.Unsigned_16 := 2#1000_0000_0000_0000#;
Bits : constant Bit_Array_16_Type := To_Bit_Array (Word);
the index of Bit_...What is the max number of bits a boolean array can have?
What is the maximum number of bit that a boolean array can have?
...Append each bit to the binary number (Not Array Indicator)
If i have the 8 Number control. Each Control represent each bit.
i.e. 0th control bit="1", 1th control bit="0", other bit = "0"....7th control bit ="1".
How to output the 1 binary number indicator. -->10000001
I had solved it.
i use true/false case to multiply each bit interial.
i.e. For 8 th bit. If =0, output to 0, if =1 (i.e not equal to 0), output 10000000
For 7 th bit. If =0, output to 0, if =1 (i.e not equ...