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authorSudipto Mallick <smlckz@termux-alpine>2024-02-10 12:49:55 +0000
committerSudipto Mallick <smlckz@termux-alpine>2024-02-10 12:49:55 +0000
commit4182a108a01df3aa28009716472f0ef291704866 (patch)
tree8fabeb2d6ddff80b930c02b3d535b5447bbd41dc /opencv/code/a4.py
parent02884d29e4f5aea71364a203dcaecd53600d8aa4 (diff)
downloadzadania-main.tar.gz
Complete DIP assignments main
Diffstat (limited to 'opencv/code/a4.py')
-rw-r--r--opencv/code/a4.py17
1 files changed, 17 insertions, 0 deletions
diff --git a/opencv/code/a4.py b/opencv/code/a4.py
new file mode 100644
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--- /dev/null
+++ b/opencv/code/a4.py
@@ -0,0 +1,17 @@
+import cv2
+import numpy as np
+
+image = cv2.imread("4i.jpg")
+
+blue_channel, green_channel, red_channel = cv2.split(image)
+
+zeros = np.zeros_like(blue_channel)
+
+# Merge each channel with zeroes for the other channels
+blue_image = cv2.merge([blue_channel, zeros, zeros])
+green_image = cv2.merge([zeros, green_channel, zeros])
+red_image = cv2.merge([zeros, zeros, red_channel])
+
+cv2.imwrite("4.b.jpg", blue_image)
+cv2.imwrite("4.g.jpg", green_image)
+cv2.imwrite("4.r.jpg", red_image)
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/*
** $Id: lzio.c,v 1.31.1.1 2007/12/27 13:02:25 roberto Exp $
** a generic input stream interface
** See Copyright Notice in lua.h
*/


#include <string.h>

#define lzio_c
#define LUA_CORE

#include "lua.h"

#include "llimits.h"
#include "lmem.h"
#include "lstate.h"
#include "lzio.h"


int luaZ_fill (ZIO *z) {
  size_t size;
  lua_State *L = z->L;
  const char *buff;
  lua_unlock(L);
  buff = z->reader(L, z->data, &size);
  lua_lock(L);
  if (buff == NULL || size == 0) return EOZ;
  z->n = size - 1;
  z->p = buff;
  return char2int(*(z->p++));
}


int luaZ_lookahead (ZIO *z) {
  if (z->n == 0) {
    if (luaZ_fill(z) == EOZ)
      return EOZ;
    else {
      z->n++;  /* luaZ_fill removed first byte; put back it */
      z->p--;
    }
  }
  return char2int(*z->p);
}


void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) {
  z->L = L;
  z->reader = reader;
  z->data = data;
  z->n = 0;
  z->p = NULL;
}


/* --------------------------------------------------------------- read --- */
size_t luaZ_read (ZIO *z, void *b, size_t n) {
  while (n) {
    size_t m;
    if (luaZ_lookahead(z) == EOZ)
      return n;  /* return number of missing bytes */
    m = (n <= z->n) ? n : z->n;  /* min. between n and z->n */
    memcpy(b, z->p, m);
    z->n -= m;
    z->p += m;
    b = (char *)b + m;
    n -= m;
  }
  return 0;
}

/* ------------------------------------------------------------------------ */
char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n) {
  if (n > buff->buffsize) {
    if (n < LUA_MINBUFFER) n = LUA_MINBUFFER;
    luaZ_resizebuffer(L, buff, n);
  }
  return buff->buffer;
}