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How to convert a PIL Image into a numpy array?
...rted to for example 0.0-1.0 in the numpy array. Some unit conversions from uint8 do this, but in this case, it doesn't.. so check it :)
– BjornW
Jan 21 '19 at 10:15
1
...
How to remove convexity defects in a Sudoku square?
...ray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
mask = np.zeros((gray.shape),np.uint8)
kernel1 = cv2.getStructuringElement(cv2.MORPH_ELLIPSE,(11,11))
close = cv2.morphologyEx(gray,cv2.MORPH_CLOSE,kernel1)
div = np.float32(gray)/(close)
res = np.uint8(cv2.normalize(div,div,0,255,cv2.NORM_MINMAX))
res2 = ...
Why does integer division in C# return an integer and not a float?
...t has the first of these types in which its value can be represented: int, uint, long, ulong.
Thus, since you declare 13 as integer, integer division will be performed:
Manual:
For an operation of the form x / y, binary operator overload resolution is applied to select a specific operator...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
...es length:asn1Data.length usingBlock:^(NSData *data, int type) {
const uint8_t *s = data.bytes;
const NSUInteger length = data.length;
switch (type)
{
case RMAppReceiptASN1TypeBundleIdentifier:
_bundleIdentifierData = data;
_bundleIdentifier = RMASN1Re...
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...PWSTR /
WCHAR* /
wchar_t*
Right:
BSTR bs = ...; //
//...
UINT len = ::SysStringLen(bs);
// Do not modify the BSTR content by
// C/C++ string functions
LPTSTR sz = new TCHAR[len+1];
_tcsncpy(sz, bs, len);
::SysFreeString(bs);
delete []sz;
Wrong:
BSTR bs = ......
With arrays, why is it the case that a[5] == 5[a]?
...ge would make some situations associative which presently aren't, e.g. 3U+(UINT_MAX-2L) would equal (3U+UINT_MAX)-2. What would be best, though, is for the language to have add new distinct types for promotable integers and "wrapping" algebraic rings, so that adding 2 to a ring16_t which holds 6553...
Get path of executable
...typedef std::vector<char> char_vector;
char_vector buf(1024, 0);
uint32_t size = static_cast<uint32_t>(buf.size());
bool havePath = false;
bool shouldContinue = true;
do
{
int result = _NSGetExecutablePath(&buf[0], &size);
if (result == -1)
{
buf.res...
How can I use UIColorFromRGB in Swift?
... Swift version of that function (for getting a UIColor representation of a UInt value):
func UIColorFromRGB(rgbValue: UInt) -> UIColor {
return UIColor(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
...
Making the iPhone vibrate
...
In Swift: AudioServicesPlayAlertSound(UInt32(kSystemSoundID_Vibrate)) (at least as of beta 2)
– Sam Soffes
Jun 18 '14 at 23:25
...
Swift - Convert to absolute value
...gnitude property. magnitude has the following declaration:
var magnitude: UInt { get }
For any numeric value x, x.magnitude is the absolute value of x.
The following code snippet shows how to use magnitude property in order to get the absolute value on an Int instance:
let value = -5
print(...